@Anth12 i just noticed some other clues as to the Clamp-o-tron shielded and inline having issues with docking  and undocking. Yesterday i was moving fuel tanks from one vehicle to the other. I moved 3 tanks no issues - quick saved and went to bed. Today when I loaded up again to continue i had the bug were the port was docked but not docked. So i loaded a previous save. But all the saves were my Clamp-o-tron was connected to a Clamp-O-Tron shielded there was a bug were it was connected