I think there are slight differences in size, like half a centimeter. Doc A a little deeper, but a little less height (that’s from their documentation, can’t check right now, but next to each other they seem similar) Not sure if they can still source the old MM cases anyways.
Btw, @elektrosamplist a Eurorack version with a few more cv inputs and (maybe more possible modulation destinations, the filters for example, second parameters like mod speed) would probaply sell well (also no dealing with psu regulations).