Simple answer is yes. More precisely a unit is not active when it has an "X" in the corner (see 184.108.40.206 below). It does not have to have a number to be active, it could be a blank circle, and still be active (examples of this are Foot of Gork and Pyroelectric Blast)
220.127.116.11: None of a Unit’s effects are active while the current corner has
an X in it, or when the Unit is about to Exhaust ( 6.1 ). Even
if the rotation symbol is empty, the Unit is still active.
Thanks for that. I appreciate the response.