Maintain signatures through preview?

I’ve noticed that if I click the box that says “use signature” and then hit preview, the box goes back to being unclicked. Is it possible to change this, or should I just wait until I’m ready to submit before I go to turn my signature on? The latter is the easiest solution for everybody, so unless the former is on the same level of difficulty, I wouldn’t be upset if no one did it.

Automatic sigs have been disabled on the SDMB, as I have done on the UnaBoard, in order to speed things up. If you must have a sig just turn it on before the final submit.

That’s what I figured. Thanks for your time.