Files in Groupfolders are not found when they are moved or deleted

[doxthree]

There is an issue with moved files in groupfolders.

Steps to reproduce:

1. Setup Nextcloud with gdatavaas and groupfolder
2. Disable gdatavaas access to cloud, so files wont get scanned on upload
3. Upload some files into the groupfolder
4. Move or remove a file in this groupfolder
5. Enable gdatavaas access again
6. Start gdatavaas scan via occ
7. occ scan should log:
   "File 42 not found"