A little help please;

We've got a CADWorx custom block library. Not sure if why this is happening now, but some of the blocks don't allow for the line number to be changed. They also don't allow you to access the ISOGEN or CUSTOM DATA buttons (they're greyed out). Basically, it's set somehow to "read only".

Thought that maybe the items were on a locked layer, but that's not the issue.

Any help to get these items to be editable again would appreciated.