Overflowing Queue Call Not Working Properly

We have a queue that is set to overflow to another queue, if the call is not answered in a certain time. Up to this point it works fine. When it goes to the second queue, the call goes to any member of the second queue regardless of their status on the queue. So if a users manager disables them on that queue, because they are taking calls on another queue that day they still get offered the overflowed calls ,even though their status is disabled on that queue.

Support say expected behaviour?