Convergence Join AD question

1 Virtual Center with 1 External PSC.  Both already upgraded to 6.7 U3.  Looking to Converge.  Both VCSA and PSC are already joined to AD and both already have objects in the Servers OU.

Converge to Embedded process has an option for Skip AD Join or Join AD.  Considering that the VCSA (and PSC) is already joined to AD should I skip? 

Thanks