You can. By following the Modelling FAQ about what importer programs to use.
HOWEVER, none of the import programs bring the bones or animations in correctly. Some bring in more than others, but I have never imported a model that is complete and bug free. Most times, the anims need deleted.
What you can do, is bring the model in, and edit the geosets and bodies. Then by editing the MDL manually after, you can COPY over all the bones and anims needed, so they will be the same.
Imported models DO bring in the UVW unwrap information. However, the modifier is not there. For each geoset, ADD the modifier back in, but you dont have to change it. Then when you export, the UVW data will export as well.