Don't know about the first question, but to answer the second one no, you can't go from a .mor to a .mrh, at all. I like it this way, to be honest, because it guarantees that the owner of the .mrh will still have control over his design. You know how many people would take say, one of Dracomies' designs, edit it a little bit and then re-release that as their own creation? A lot. And so this .mrh format saves us from all that foolishness. Trust me, its better this way.