The good thing about PML is, that you don't have to worry a lot. Use the exporter, check full body or bodyparts and "go". reimport works by "comparing" exported and altered obj-file. Your exported obj can be morphed or posed it just doesn't matter. The best is you can make a 3D postwork in your favourit modeller to elliminate unwanted jointcreases and reimport it in Poser. Just nice :)