I just ran into the same thing... I believe the kicker was to LEAVE THE PROJECT and sign back in after you made the change to LEAD ARCHITECT..
Let me know if this helps...
Duane
Visual Frontiers
AC25 :|: AC26 :|: AC27
:|: Enscape3.4:|:TwinMotion
DellXPS 4.7ghz i7:|: 8gb GPU 1070ti / Alienware M18 Laptop