I want to add a loop cut to my box with the turbosmooth modifier. However, I don't want to collapse the modifiers because I still want to edit the overall shape of the box, but with the turbosmooth modifier active I can't add an edge cut, the option just isn't there.
Clicking on the Box (which is an editable poly by the way) in the stack just switches to the Poly layer, making the turbospeed modifications invisible. This is probably a really newbie problem, and if there's a section in the Manual on this sort of thing, I'd be grateful if someone could point it out. Otherwise, I'm stuck.
I'm not sure if I understand you correctly, but you can always put another Edit Poly modifier above Toorbosmooth. Then you will be able to edit smooth mesh and it will not disapper.