I am trying to transition to Pro and I did an import of an mxd. It didn't import my border (neatline) and so I was trying to figure out how to add it back in. I stumbled across this bug or whatever it is called. It has a workaround but not a very good one. I am just wondering why neatlines are not supported in Pro. I feel a nice border around a map makes it look more professional. This seems like a simple idea and Kory Kramer encouraged me to post this here.