We try to understand... but we don't actually

Valued Support-Team,

actually we installed and activated for the first time this probably great backup feature for backup our large multisite web application.

We loved to follow the given explanation which made it easy for us to get it working... and it does but now, when checking the list of all executed task automatically done we recognized that one domain did not save 'non-core' (what ever this means)... please see attached screenshot below.

We are now worry in case we have to do a restore would that cause any problems?

Have we done anything wrong?

Please advice us.

Thank you.
Kind regards