I made a program to do this to an .otm file, but when trying to convert a RL Map that's .otbm to .otm in SimOne's map editor after a while it runs out of memory and doesn't convert it. (I was using my dad's gateway, amd quad w/e, 4 gb ram, 2x360 hdds, etc. and that happened). So unless you can convert it to .otm or manually move the map in RME then it can't be done.
Jo3