Alpha 5 - enemy ship in my orbit

A system I invaded had a transport in orbit. It's still there. I can doubleclick on it to bring it out of orbit and get to select how many troops that shall leave with it. When it comes out of orbit it has the Yor's colors and it's named YOR Transporter or something like that. Since it's a Yor ship when it leaves orbit, the AI controls it. It goes right back to the system automaticly but dont start an invasion as it should if it was truly an enemy transporter. Instead it just enters orbit.