Hi, Johnny. While on the K-1 screen, you can highlight the activity you want to remove/renumber. Then go to the Detail menu, and select either Cut property or Copy property. Then go back up to the Detail menu and select Paste property. This will insert the K-1 activity at the end of the list.  You may still have gaps in the list, but this would be the only solution short of deleting them, and re-adding them in.

Hope this helps!