Right, try exporting to .3ds, and then import into Ms3d
If I knew how, I would gladly take that advice.
Metasequoia doesn't allow you to save files as .3ds, and the export option is...odd. I'm not even sure how to get that to work, as it gives me an error about a commonpartsparts.ini file and DOGACGA.
Exact error message:
Cannot find 'commonpartsparts.ini'.
Set the 'DOGACGA' folder from the configuration.