I actually found a work-around to this shortly after posting. I just have the objects pasted onto a canvas and have the collision mask update. Unfortunately, that method only works on mid-high range machines. It doesn't work on either of the crappy computers in my house, just my good one. I'm gonna have to post it later to see if anybody else with an older computer has problems with it.
Also, hope to see something about loading collision masks soon, then.