Backup qubes - warning unrecognized data found

I had a Qubes crash during an update routine. Now, when I want to do a ‘Qubes OS - Backup qubes’ the pop-up window for the selected qubes displays (just below the check ‘Compress the backup’) Warning: unrecognized data found in configuration files. How to get this fixed or purged?

Take a look in /etc/qubes/backup/ in dom0 and see if there’s unwanted stuff
there.

I’ve two identical files:

qubes-manager-backup-tmp.conf
qubes-manager-backup.conf

This the *tmp.conf file a temporary which hasn’t been removed due to the crash?

Can I manually delete it (if this is the issue of the warning)?

Ok, I just removed the *tmp.conf file manually and the warning disappeared.