I have a plan for a barn (30'x40', external 2x6 framing, 4:12 shingle roof, stucco) complete. I would like to extend the building by 10' on the farthermost wall away from the single entry door which is the left wall in plot plan mode. When I try to extend framing, foundation, etc, I begin to get big disconnects everywhere and missing walls. Could anyone explain the proper steps to perform this so I do not end up recreating all of my work?
Barn2017.plan
Barn2017.layout