Its real simple, if cleared the apch, you do just that, ensuring when doing so you dont bump into anything solid. Last week when sixty miles back from destination it went like this"CG XXX, cleared out of controlled airspace for the apch into CYXXX," now there are some big lumps of rock around this particular place, the controller presumes you have charts giving the MEA and wont try to move one with the pointy end of your aircraft. Lets not complicate things.leave that to the nerds on the groundspeed thread!