What you want to do is convert the morph target into a set of INJ/REM poses to be compliant with DAZ|Studio.  I had a lot of trouble figuring that out myself, but ended up just spending $15 or so here on Binary Morph Editor, which will painlessly convert a Poser PMD file containing one or more specific morphs into a pair of INJ/REM pose files.  I also own DAZ INJ Pose Builder but never did figure out how to actually get it to write a proper INJ pose.  I am sure there are other ways to get this done, but for me the $15 was a decent trade for the time saved, and I will very likely use it again in the future (V4 toe morphs).

It may be that I was somewhat stupid, but I read a dozen tutorials on how to create INJ/REM poses and had many failures until I gave Binary Morph Editor a try.

Be aware that when you do get around to creating the INJ/REM pose, depending on how you created your pose you may need to manually rename the morph channels used on that bodypart - Poser does not mind if you name the morph channel "FrIpPlYfRuFrU" and the morph will work, and might even be transportable between figures by a morph target OBJ export, but my first tries at INJ pose files with non-standard names would not work.  There are ranges of morph control channel names set aside internally that you can use for this purpose; examine any known good INJ/REM pose for a good example.

Note that if you rename a control channel in the INJ post, you must rename it exactly the same way in the coresponding REM pose as well.

My Freebies