Calendar restore backup from files

[bjlockie]

I have a recurring event in Calendar that occurs withing a few days each time.
When it happens I update the date to the exact day it happened and only update that occurrence for the event.
I mistakenly updated all occurrences.
I didn't have backups enabled from within Calendar but I do make copies of the phone.
My question is is there a file of the current calendar somewhere on the phone.
I don't use Google so it is a local calendar.

[naveensingh]

My question is is there a file of the current calendar somewhere on the phone.

No, the database is updated as soon as you make the change.

I didn't have backups enabled from within Calendar but I do make copies of the phone.

What do you mean by "copies of the phone"? If you mean some device-level backup that includes Fossify Calendar app data, then yes, restoring that backup should restore your original per-occurrence edits.

[bjlockie]

What do you mean by "copies of the phone".

I connect the phone by USB and copy everything to my computer.

the database

Can I restore the old one from my copy?

[bjlockie]

I'm assuming the database is not accessible.
I do have Events_2024_04_26_18_41_22.ics from SMT.
Can I restore that without deleting anything after 2024-04-26?
It'll replace everything before, not make duplicates?

[naveensingh]

Yes, all app data is stored on a "hidden" path that can only be accessed by Fossify Calendar or a user with escalated privileges (e.g., root).

I do have Events_2024_04_26_18_41_22.ics from SMT.
Can I restore that without deleting anything after 2024-04-26?
It'll replace everything before, not make duplicates?

If you import it as-is, it'll likely fail with the "No new items" message, but if you update the ICS file's last modified time to something recent, importing will overwrite your current changes.

I suggest the following:

• Open the ICS file in a text editor
• Change the UIDs to something else
• Import (preferably in a different calendar/event-type with different colors)

This will create duplicates, but you'll have your old data.