This version of OAF 103 has been converted to use the CH CRS Map. It looks like CH had taken the original map and flipped it around and removed a major building from the southern end of the map. CH had also removed the 2nd level symbol from Building B5 on the CH map version. Further the sewer symbols are missing from this map also, so you can either draw in the sewer symbols or use the original CRS map as a guide.