The entire set of behavior of morph dials in one object "following" the dials in another object (in this case, a conforming garment and a character figure) is pretty much accidental, and was never supported in Poser until version 8.

"Copying" the morphs from the character to the conforming garment is impossible, although they can be converted with software that can do the job.  You can't simply copy the morph data from one model to the other and have it do anything useful because the geometry is different, and will be different for each and every garment.  The fundamental thing you're probably missing is what morphs actually do: they move specific vertices from the default position to a specific location.  Since the vertex order and vertex count is different for every model, the morph data will never be useful when simply copied.

A conforming clothing piece is not necessarily less complex than the target figure.  Obviously a pair of panties is pretty simple, but e.g. if you have a bodysuit with gloves and mask it pretty much IS as complex as the target figure.  If you added more parts to it, e.g. a tail, it could be more complex. 

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