Basically, fail over the AG to each replica and issue

ALTER AUTHORIZATION ON DATABASE::[AppLiveDb] TO [sa]

With regards to the properties window, maybe your AG properties are set to not allow reading...

The trouble with a delete operation is that if you think in terms of removal, how would one expect to know that an object can be dropped? This can be forced...

I believe this is due to the secondary AG of the DAG still having a "copy" of this database on its own AG. Once it is removed from all replicas on...

Hi there. I have some experience with AGs, but I tend to use Powershell and manual scripting because the wizard can be quite.... oversimplified. I'll take your questions in order...