Actions of Removal (from e.g. Firewall Application Rules) are not persistent

I have a couple of Applications in the Application Rules list that I want them removed. I select them, press Remove, there’re gone for an instant and when I check out my Firewall there’re still there. Even if I put them to a different ruleset, the change does not stick either.

Also, I have some files shown in the list of Unrecognized Files; I select Remove, but the also reappear in the same way as described above.

I suspect I’m probably doing something wrong here, so I’d greatly appreciate your advice. Thank you in advance.