Custom Access after updating and migrating
This was also the subject in June 2021 at https://discussions.apple.com/thread/252868173?login=true
After migrating user files into a new Mac Mini running Monterey (12.1) using Time Machine as the source, all or nearly all of the user files were designated as having "custom access" for the user, although the user was assigned read and write permissions. The effects were: a) files could be opened but not saved if changed; I had to Save As with a different name then delete the original and revert the name on the new file, b) I have to enter my password to change the name on any folder or file in my Home folder or to delete any file or folder in my Home folder. This is a huge time burner and worth some effort to fix.
The iMac that produced the Time Machine files was updated to Monterey (12.1) and its user files were migrated from an older iMac's Time Machine with the same result I am reporting here for the new Mac Mini.
The Time Machine has been put to work on the Mac Mini so the previous backups are no longer available, which means all available copies of the files/folders have this custom access assignment.
In Terminal, I tried sudo chown -R Username Homefolder to no effect. I followed Mac Support advice and copied the files onto a hard drive (not Time Machine), re-installed Monterey and copied the files back, which had no effect. I logged in as root (hoping it would have more power than sudo) and applied the same chown -R Username Homefolder to no effect and then applied chown to a single file within the home folder to no effect.
The conversation at the link given above provides more information about permissions but ended with no conclusion—perhaps because the problems created by the custom access were never defined. This seems to be a bug that crawls in under certain circumstances of upgrade and migrate. Is there a solution or do I have to put up with this time burner until I have opened, renamed and re-saved all affected files? Info image follows:
