I cannot copy and paste within the same drawing in A360. A window keeps popping up with the following notation: "You can only select objects within the Markup layer. Objects on View only layers cannot be selected." I may be forgetting how to do this, as I was able to copy and paste before. Not sure how to get into the Markup layer.
A360? That's another cloud product altogether https://a360.autodesk.com/drive/app/root
AutoCAD360? then... Are you in a layout? You need to be in the model I believe is what it is asking: click blue icon top-left, then eye-shaped icon, then under Layouts select MODEL.
Don't abbreviate product names, call a spade a spade 🙂