Move Face Command and Properties.

Hey all, I made a block and mated it at the beginning of an assembly then after had to extend the block by 2" in one direction so I used the move face command. After doing so I went back to the properties of the block just to see if the stock size of the block had changed and it didn't it still said 6.5" when it should now say 8.5". Does it not read that I moved the face by 2" or should I be using a different command? I would have just went back to the original sketch and made the changes there but based off of where my origin is and design intent it would have messed with alot of mates.

SolidworksParts And Features