Is there a possibility to fill the opening with a demolished door with a new wall ?
Quick solution, try and draw a wall in place of the door?
I use another way. For such occasions I have several types of doors/windows - a set for existing ones, for the ones to be removed and for refilling openings with walls. As at the picture:
The window on the right side is filled with a “wall”, but technically it is a window. Its definition is very simple: the only element is a leaf, with widrh size of 100% (and thickness of a wall, so there is a place for a fine option for a percentage size of the leaf):
It works for me, but the problem could be if the refillment would overlap with another opening.