I have about 5 separate areas of one large room designed as separate room files. Is there any simple way to combine them into one large room? Cut and past kind of thing?
No simple way. You will unfortunately need to just create the one big room. The problem that you will likely incur is that the file will become huge and it will bog down your computer if there are a lot of cabinets in this big room. You definitely want to keep it simple and get rid of any extra fluff like pulls.