I'm not sure if this map has ever been on Blitz but I played it on another server about 3-4 years ago and I remember it being fun. Someone was nice enough to find a copy and share it on GameBanana just recently. I have not done any testing of this map other than loading it up on my end to see how it looks. I don't recall any issues with it but if it is added we will need to keep an eye out for any. There are points in both spawn areas that are marked with a yellow and black caution lines. If you cross those lines trying to get into the opposing teams spawn you will die. There are four single-cap flags on the top floor and the bottom floor has one double-cap flag.
http://www.gamebanana.com/dods/maps/165501
TOP FLOOR
BOTTOM FLOOR
SPAWN AREA (note caution lines)