The export works, but the max import doesn't work -- Autodesk doesn't keep it up to date -- there is a 3rd party importer, but that only works with certain versions of 3ds max. Check the official poser pro website for exact details -- the url escapes me right now....

There is a sample on the poser pro website showing that it works, but I haven't tried animation yet. You might want to post more details on exactly what you're trying to do, and see if anyone else has tried exactly what you want to do.