Isn't that unfortunate.
I remeber the first time I tried to insert a door into a curtain wall, thinking that it would cut right in, just like they do into a wall object.
Needless to say the (lack of) interaction between doors and curtain walls really limits their ease of use. Most curtain walls have doors in them and it would be better if they were easier to add and delete.
Lots of 6-ft doors get cut into curtain walls with mullions at whatever odd spacing, 32", 29.75", you name it. It would be better if the doors could cut an automatic insertion into the wall sytem, with its own frame elements as an option.
Keep the upgrades coming.