First Yea for fixing it!
Boo for breaking the existing DB's
*EDIT* realized what you meant about changing heading to a float :p I assume heading is in the range of 0 - 512 ( corasponds to 0-360 degrees) or were you really nice and made it a degree value like npc headings?
If someone can get me a nice lest of items that you click on to teleport, with the items locand zone are, dest zone, and dest loc/heading I'll see about getting a new doors table generated.
Oh and while I think about it, lift data: loc, startz endz trigger loc(s) and I'll try to get that into it also.
I'll probably generate the doors, and release it then start adding the new data to it.