diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java
index 8f79fe8411..84de9c8c09 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java
@@ -306,6 +306,7 @@ private void createCopy(
         }
         final Mask firstSourceMask = mask != null ? mask : sourceMask;
         final Mask finalMask = MaskIntersection.of(firstSourceMask, new RegionMask(allowedRegion)).optimize();
+        new MaskTraverser(finalMask).setNewExtent(editSession);
         if (finalMask != Masks.alwaysTrue()) {
             copy.setSourceMask(finalMask);
         }