I’d agree with that, plus the manual doesn’t cover it at all, and the help text isn’t quite enough to convey it.
I can’t recommend how you should treat your varying-levels-of-importance-and-update-frequencies data, however I did express space concern earlier on adding the second job while old backups exist in the first.
You can also consider your own restore history – do you ever actually restore? If so, do you need to have precise version choice? Going back for what period? How often do you back up? That limits precision too.
Reassurance is good, but unless you want to increase your storage capability you may need to trim files.
This command can either take a list of filenames or use the filters to choose which files to purge.
You said earlier that you had filters in use, probably of the --exclude variety. If you’re in GUI Commandline, options (including such filters) are automatically put on the screen. If you then modified the screen to do a purge command, you might have typed paths into Commandline arguments instead of the --include filter, while leaving the --exclude filter, causing the “You .cannot combine filters and paths on the commandline”.
It’s hard to say, because you didn’t say what you did, but if you left an inappropriate–exclude, just delete it. Changes on the Commandline screen don’t cause changes in the saved settings. Tailoring is expected…