Yes, the math is simple. Lets say you had 200 million total markers for this one class. You would assign 150 million markers split evenly to the releasing preferred classes weighted by the par value of their preferred shares and the remaining 50 million markers will be split evenly amongst the releasing common shares.
Guess what? You dont have to believe my math. This very same math has already happened. Its called WMIH.
WMIH originally had about 200 million shares split 75/25 between preferred and commons coming out of POR7.
They could have done the same exact thing with one escrow class for both preferred and commons. Why maintain separate escrow classes if you are going to split 75/25 everything to the end? Makes absolutely no logical sense unless APR comes back into play for bankruptcy remote assets.