This looked like a great map to use for my game and I realize this thread is 4 years old but ....isn't the first level of this map missing the rooms in the middle where the characters first appear after entering the pyramid? :0
Since the Artist hasn't been active for 4 years I guess I won't hold my breath on an answer from him. :P
If memory serves, the maps created were missing from the original adventure, but any maps that did exist in the publication weren't done here - only the missing maps...