Can't delete rogue Asset Group


We've had a random Asset Group picked up from somewhere and I'm unable to delete it from Asset Management > Asset Groups > Select > Delete.

I've been able to create and delete other groups to test the function, but this one doesn't appear to be able to be removed.

It did have some assets assigned to it, but I've moved these to other groups thinking it was an asset issue. I've also put dummy assets in the group thinking that may help me delete it - but without success. When a group is selected in the asset, additional "webding" groups are visible.

It's really messing with our layout ...and my OCD. Any advice would be appreciated.

SysAid Build: v18.1.54 b3