mystery wall break

[David J. Potter]

It is the way this software is programmed to work (why this is is a question best asked of the persons who write this software). In order to draw a "room" within a "Room" there MUST be a connecting wall, either visible or invisible connecting the inner room with the outer room. The software is programmed to automatically place an invisible wall for this purpose whenever the end-users forgets to do so or does not know to do this (thus it is automatic and IS necessary).
As I said, I do not know why this is required, I merely know that it is required for the software to properly function.

DJP

[JoAnn]

As David said...that invisible wall is necessary. But if it is blocking a door placement, just relocate the wall!