**@ghostofmacbeth:
**Of course you can use other morphs.
You just have to use the original cr2 that matches the object.

If you used the M3 object, you need to point the setup room to the the M3 cr2. If you used V3RR, you point it to the V3RR cr2, and so on.
Turning a morphbrushed morphed object back into a fully working figure is a matter of 5 to 10 seconds, not more.

Just make sure you don't move the object while morphing, so that the joint centers will still be match.

If you want to extract your new morph and turn it into a distributeable injection morph that you can sell or give away, a few more steps are necessary, but that is true for any custom morph.