diff --git a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/client.tsp b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/client.tsp
index a8c005137e41..86cddadfeb88 100644
--- a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/client.tsp
+++ b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/client.tsp
@@ -67,3 +67,7 @@ interface QuestionAnsweringAuthoringClientOperations {
   #suppress "@azure-tools/typespec-azure-core/use-standard-operations" "specified in routes.tsp"
   addFeedback is Language.QuestionAnswering.Authoring.QuestionAnsweringProjects.addFeedback;
 }
+
+@@clientName(QuestionAnsweringProjectMetadata, "QuestionAnsweringProject");
+@@clientName(ExportOptions.format, "fileFormat");
+@@clientName(ImportOptions.format, "fileFormat");
diff --git a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/preview/2025-05-15-preview/questionanswering-authoring.json b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/preview/2025-05-15-preview/questionanswering-authoring.json
index dbd7ee3a4fb5..fbb2546a6dac 100644
--- a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/preview/2025-05-15-preview/questionanswering-authoring.json
+++ b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/preview/2025-05-15-preview/questionanswering-authoring.json
@@ -296,65 +296,10 @@
             "pattern": "^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$"
           },
           {
-            "name": "format",
-            "in": "query",
-            "description": "Knowledge base Import or Export format.",
-            "required": false,
-            "type": "string",
-            "default": "json",
-            "enum": [
-              "json",
-              "tsv",
-              "excel"
-            ],
-            "x-ms-enum": {
-              "name": "format",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "json",
-                  "value": "json",
-                  "description": "Export or Import QnA assets in JSON format."
-                },
-                {
-                  "name": "tsv",
-                  "value": "tsv",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
-                },
-                {
-                  "name": "excel",
-                  "value": "excel",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ExportOptions.format"
           },
           {
-            "name": "assetKind",
-            "in": "query",
-            "description": "Kind of the asset of the project.",
-            "required": false,
-            "type": "string",
-            "enum": [
-              "qnas",
-              "synonyms"
-            ],
-            "x-ms-enum": {
-              "name": "AssestKind",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "qnas",
-                  "value": "qnas",
-                  "description": "Question and Answers."
-                },
-                {
-                  "name": "synonyms",
-                  "value": "synonyms",
-                  "description": "Synonyms."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ExportOptions.assetKind"
           }
         ],
         "responses": {
@@ -410,74 +355,13 @@
             "pattern": "^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$"
           },
           {
-            "name": "format",
-            "in": "query",
-            "description": "Knowledge base Import or Export format.",
-            "required": false,
-            "type": "string",
-            "default": "json",
-            "enum": [
-              "json",
-              "tsv",
-              "excel"
-            ],
-            "x-ms-enum": {
-              "name": "format",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "json",
-                  "value": "json",
-                  "description": "Export or Import QnA assets in JSON format."
-                },
-                {
-                  "name": "tsv",
-                  "value": "tsv",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
-                },
-                {
-                  "name": "excel",
-                  "value": "excel",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ImportOptions.format"
           },
           {
-            "name": "assetKind",
-            "in": "query",
-            "description": "Kind of the asset of the project.",
-            "required": false,
-            "type": "string",
-            "enum": [
-              "qnas",
-              "synonyms"
-            ],
-            "x-ms-enum": {
-              "name": "AssestKind",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "qnas",
-                  "value": "qnas",
-                  "description": "Question and Answers."
-                },
-                {
-                  "name": "synonyms",
-                  "value": "synonyms",
-                  "description": "Synonyms."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ImportOptions.assetKind"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Project assets the needs to be imported.",
-            "required": false,
-            "schema": {
-              "$ref": "#/definitions/ImportJobOptions"
-            }
+            "$ref": "#/parameters/ImportOptions.body"
           }
         ],
         "responses": {
@@ -3306,6 +3190,142 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "ExportOptions.assetKind": {
+      "name": "assetKind",
+      "in": "query",
+      "description": "Kind of the asset of the project.",
+      "required": false,
+      "type": "string",
+      "enum": [
+        "qnas",
+        "synonyms"
+      ],
+      "x-ms-enum": {
+        "name": "AssestKind",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "qnas",
+            "value": "qnas",
+            "description": "Question and Answers."
+          },
+          {
+            "name": "synonyms",
+            "value": "synonyms",
+            "description": "Synonyms."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ExportOptions.format": {
+      "name": "format",
+      "in": "query",
+      "description": "Knowledge base Import or Export format.",
+      "required": false,
+      "type": "string",
+      "default": "json",
+      "enum": [
+        "json",
+        "tsv",
+        "excel"
+      ],
+      "x-ms-enum": {
+        "name": "format",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "json",
+            "value": "json",
+            "description": "Export or Import QnA assets in JSON format."
+          },
+          {
+            "name": "tsv",
+            "value": "tsv",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
+          },
+          {
+            "name": "excel",
+            "value": "excel",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.assetKind": {
+      "name": "assetKind",
+      "in": "query",
+      "description": "Kind of the asset of the project.",
+      "required": false,
+      "type": "string",
+      "enum": [
+        "qnas",
+        "synonyms"
+      ],
+      "x-ms-enum": {
+        "name": "AssestKind",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "qnas",
+            "value": "qnas",
+            "description": "Question and Answers."
+          },
+          {
+            "name": "synonyms",
+            "value": "synonyms",
+            "description": "Synonyms."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.body": {
+      "name": "body",
+      "in": "body",
+      "description": "Project assets the needs to be imported.",
+      "required": false,
+      "schema": {
+        "$ref": "#/definitions/ImportJobOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.format": {
+      "name": "format",
+      "in": "query",
+      "description": "Knowledge base Import or Export format.",
+      "required": false,
+      "type": "string",
+      "default": "json",
+      "enum": [
+        "json",
+        "tsv",
+        "excel"
+      ],
+      "x-ms-enum": {
+        "name": "format",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "json",
+            "value": "json",
+            "description": "Export or Import QnA assets in JSON format."
+          },
+          {
+            "name": "tsv",
+            "value": "tsv",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
+          },
+          {
+            "name": "excel",
+            "value": "excel",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/routes.tsp b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/routes.tsp
index b19b634a67fa..ed8cde5a884a 100644
--- a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/routes.tsp
+++ b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/routes.tsp
@@ -13,6 +13,37 @@ using Azure.Core.Traits;
 
 namespace Language.QuestionAnswering.Authoring;
 
+/**
+ * Optional query/body parameters for the export operation.
+ * Using a named model enables client-side renaming without breaking wire contract.
+ */
+model ExportOptions {
+  /** Knowledge base Import or Export format. */
+  @query("format")
+  format?: format = format.json;
+
+  /** Kind of the asset of the project. */
+  @query("assetKind")
+  assetKind?: AssestKind;
+}
+
+/**
+ * Optional query/body parameters for the import operation.
+ */
+model ImportOptions {
+  /** Knowledge base Import or Export format. */
+  @query("format")
+  format?: format = format.json;
+
+  /** Kind of the asset of the project. */
+  @query("assetKind")
+  assetKind?: AssestKind;
+
+  /** Project assets the needs to be imported. */
+  @bodyRoot
+  body?: ImportJobOptions;
+}
+
 alias ServiceTraits = NoRepeatableRequests &
   NoConditionalRequests &
   NoClientRequestId;
@@ -80,25 +111,14 @@ interface QuestionAnsweringProjects {
   @pollingOperation(QuestionAnsweringProjects.getExportStatus)
   export is Foundations.LongRunningOperation<
     {
-      /**
-       * The name of the project to use.
-       */
+      /** The name of the project to use. */
       @maxLength(100)
       @pattern("^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$")
       @path
       projectName: string;
 
-      /**
-       * Knowledge base Import or Export format.
-       */
-      @query("format")
-      format?: format = format.json;
-
-      /**
-       * Kind of the asset of the project.
-       */
-      @query("assetKind")
-      assetKind?: AssestKind;
+      /** Optional export parameters. See `ExportOptions`. */
+      ... ExportOptions;
     },
     ExportJobResponse,
     {},
@@ -122,31 +142,14 @@ interface QuestionAnsweringProjects {
   @pollingOperation(QuestionAnsweringProjects.getImportStatus)
   `import` is Foundations.LongRunningOperation<
     {
-      /**
-       * The name of the project to use.
-       */
+      /** The name of the project to use. */
       @maxLength(100)
       @pattern("^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$")
       @path
       projectName: string;
 
-      /**
-       * Knowledge base Import or Export format.
-       */
-      @query("format")
-      format?: format = format.json;
-
-      /**
-       * Kind of the asset of the project.
-       */
-      @query("assetKind")
-      assetKind?: AssestKind;
-
-      /**
-       * Project assets the needs to be imported.
-       */
-      @bodyRoot
-      body?: ImportJobOptions;
+      /** Optional import parameters. See `ImportOptions`. */
+      ... ImportOptions;
     },
     AcceptedResponse,
     {},
diff --git a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/stable/2023-04-01/questionanswering-authoring.json b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/stable/2023-04-01/questionanswering-authoring.json
index a26f86d3035b..25d5aa9641b9 100644
--- a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/stable/2023-04-01/questionanswering-authoring.json
+++ b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/stable/2023-04-01/questionanswering-authoring.json
@@ -296,65 +296,10 @@
             "pattern": "^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$"
           },
           {
-            "name": "format",
-            "in": "query",
-            "description": "Knowledge base Import or Export format.",
-            "required": false,
-            "type": "string",
-            "default": "json",
-            "enum": [
-              "json",
-              "tsv",
-              "excel"
-            ],
-            "x-ms-enum": {
-              "name": "format",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "json",
-                  "value": "json",
-                  "description": "Export or Import QnA assets in JSON format."
-                },
-                {
-                  "name": "tsv",
-                  "value": "tsv",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
-                },
-                {
-                  "name": "excel",
-                  "value": "excel",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ExportOptions.format"
           },
           {
-            "name": "assetKind",
-            "in": "query",
-            "description": "Kind of the asset of the project.",
-            "required": false,
-            "type": "string",
-            "enum": [
-              "qnas",
-              "synonyms"
-            ],
-            "x-ms-enum": {
-              "name": "AssestKind",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "qnas",
-                  "value": "qnas",
-                  "description": "Question and Answers."
-                },
-                {
-                  "name": "synonyms",
-                  "value": "synonyms",
-                  "description": "Synonyms."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ExportOptions.assetKind"
           }
         ],
         "responses": {
@@ -410,74 +355,13 @@
             "pattern": "^(?=[a-zA-Z0-9])[a-zA-Z0-9-]{0,98}[a-zA-Z0-9]$"
           },
           {
-            "name": "format",
-            "in": "query",
-            "description": "Knowledge base Import or Export format.",
-            "required": false,
-            "type": "string",
-            "default": "json",
-            "enum": [
-              "json",
-              "tsv",
-              "excel"
-            ],
-            "x-ms-enum": {
-              "name": "format",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "json",
-                  "value": "json",
-                  "description": "Export or Import QnA assets in JSON format."
-                },
-                {
-                  "name": "tsv",
-                  "value": "tsv",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
-                },
-                {
-                  "name": "excel",
-                  "value": "excel",
-                  "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ImportOptions.format"
           },
           {
-            "name": "assetKind",
-            "in": "query",
-            "description": "Kind of the asset of the project.",
-            "required": false,
-            "type": "string",
-            "enum": [
-              "qnas",
-              "synonyms"
-            ],
-            "x-ms-enum": {
-              "name": "AssestKind",
-              "modelAsString": true,
-              "values": [
-                {
-                  "name": "qnas",
-                  "value": "qnas",
-                  "description": "Question and Answers."
-                },
-                {
-                  "name": "synonyms",
-                  "value": "synonyms",
-                  "description": "Synonyms."
-                }
-              ]
-            }
+            "$ref": "#/parameters/ImportOptions.assetKind"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Project assets the needs to be imported.",
-            "required": false,
-            "schema": {
-              "$ref": "#/definitions/ImportJobOptions"
-            }
+            "$ref": "#/parameters/ImportOptions.body"
           }
         ],
         "responses": {
@@ -3097,6 +2981,142 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "ExportOptions.assetKind": {
+      "name": "assetKind",
+      "in": "query",
+      "description": "Kind of the asset of the project.",
+      "required": false,
+      "type": "string",
+      "enum": [
+        "qnas",
+        "synonyms"
+      ],
+      "x-ms-enum": {
+        "name": "AssestKind",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "qnas",
+            "value": "qnas",
+            "description": "Question and Answers."
+          },
+          {
+            "name": "synonyms",
+            "value": "synonyms",
+            "description": "Synonyms."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ExportOptions.format": {
+      "name": "format",
+      "in": "query",
+      "description": "Knowledge base Import or Export format.",
+      "required": false,
+      "type": "string",
+      "default": "json",
+      "enum": [
+        "json",
+        "tsv",
+        "excel"
+      ],
+      "x-ms-enum": {
+        "name": "format",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "json",
+            "value": "json",
+            "description": "Export or Import QnA assets in JSON format."
+          },
+          {
+            "name": "tsv",
+            "value": "tsv",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
+          },
+          {
+            "name": "excel",
+            "value": "excel",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.assetKind": {
+      "name": "assetKind",
+      "in": "query",
+      "description": "Kind of the asset of the project.",
+      "required": false,
+      "type": "string",
+      "enum": [
+        "qnas",
+        "synonyms"
+      ],
+      "x-ms-enum": {
+        "name": "AssestKind",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "qnas",
+            "value": "qnas",
+            "description": "Question and Answers."
+          },
+          {
+            "name": "synonyms",
+            "value": "synonyms",
+            "description": "Synonyms."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.body": {
+      "name": "body",
+      "in": "body",
+      "description": "Project assets the needs to be imported.",
+      "required": false,
+      "schema": {
+        "$ref": "#/definitions/ImportJobOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "ImportOptions.format": {
+      "name": "format",
+      "in": "query",
+      "description": "Knowledge base Import or Export format.",
+      "required": false,
+      "type": "string",
+      "default": "json",
+      "enum": [
+        "json",
+        "tsv",
+        "excel"
+      ],
+      "x-ms-enum": {
+        "name": "format",
+        "modelAsString": true,
+        "values": [
+          {
+            "name": "json",
+            "value": "json",
+            "description": "Export or Import QnA assets in JSON format."
+          },
+          {
+            "name": "tsv",
+            "value": "tsv",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nExcel format."
+          },
+          {
+            "name": "excel",
+            "value": "excel",
+            "description": "Export or Import knowledge base replica including all assets and metadata in\nTsv format."
+          }
+        ]
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/tspconfig.yaml b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/tspconfig.yaml
index d4a09436f401..69f65132ebfd 100644
--- a/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/tspconfig.yaml
+++ b/specification/cognitiveservices/data-plane/LanguageQuestionAnsweringAuthoring/tspconfig.yaml
@@ -12,13 +12,6 @@ options:
     emitter-output-dir: "{project-root}"
     examples-dir: "{project-root}/examples"
     output-file: "{version-status}/{version}/questionanswering-authoring.json"
-  "@azure-tools/typespec-csharp":
-    emitter-output-dir: "{output-dir}/{service-dir}/{namespace}"
-    clear-output-folder: true
-    model-namespace: false
-    namespace: "Azure.AI.Language.QuestionAnswering.Authoring"
-    flavor: azure
-    generate-sample-project: false
   "@azure-tools/typespec-python":
     emitter-output-dir: "{output-dir}/{service-dir}/azure-ai-language-questionanswering-authoring"
     package-name: "azure-ai-language-questionanswering-authoring"