Uh, nasty,
Did you compile through hammer and ran the hame to test the change?
Did you read the levelchange tut ?
Also, if you're mapping for TFC, or trying to run the levelchange through a multiplayer mod, then you shold not have any levelchanges in in the first place... Only singleplayer maps should have levelchanges.
an .rmf file is the file hammer uses, then it exports it to a .map file, which all the compile tools use, the compile tools write a .bsp which is your map. (As anthony said)