Bag bellows on Wista SP

While considering the purchase of a bag bellows, I have one question to which I hope fellow LF users can provide some information. When using Wista's wide angle bellows (bag bellows) with one of their technical field cameras, i.e., VX, SP or RF, is it neccessary to remove the bellows to fold up the camera? Any info or experiences would be greatly appreciated.

I concluded that it was necessary to remove the Wista bag bellows

before folding up my SP. I never forced the issue, but the camera did

not close readily without first removing the bag bellows.