Another vote for Bitwarden

OK, I see what it’s doing. If an app was removed from the favourite list, the import of the backup file will add the missing app back to the favourite list.

That actually does not do what I was after.

I am still looking for an app that will recognise all the installed F-Droid apps, so that I’ll be able to backup the apps to a backup list. Then use the app and the backup list to reinstall the apps on another phone.

I was able to use Neo Store to export favourite apps as you suggested, but I wasn’t able to import apps back, not sure what am I missing …