When you delete a section from a wall consisting of multiple construction layers, the miter in the remaining wall is retained. Instead of drawing a line and joining it with the individual construction layers using Join Linear Component with Line, it is usually enough if you apply the Recreate option.
Even shapes of this kind can be adjusted in a single step:
This way, you can also copy windows quickly and easily from single-tier walls to multi-tier walls.
Tool(s): Restore 3D View 
Join Linear Component with Line, it is usually enough if you apply the Recreate option. 
