Question about Full Backup

I have a current profile with full backup that I manually run which goes to NAS. I deleted some old files from the source folder and later ran the profile only to get an error 92 (no content), those files were missing.

They are not listed in the Comodo/backup/profile/source checkbox’s to uncheck. To run the profile I had to uncheck that whole folder.

When I delete files in the source, do I need to make a new profile or update and save the old one? Can it be set to ignore changes like this?