I don't know of another place to convert scales to MTS Sysex format than:
http://www.microtonalsoftware.com/scl-scala-to-mts-converter.html
But this website is now dead. I can't find another site or piece of software to convert SCL to MTS. As long as this tool doesn't exist I can't update the scales on my hardware, i.e. Prophet rev2 and Cirklon.
Scale Workshop is probably the prime candidate to take over this task, now that microtonalsoftware.com is dead.