Quote - If you save a figure to the library (or to a PZ3), it does not get the new morphs which have been added after the file was saved or the scene was saved. I understand that. But that is a limitation in Poser whether you make new homegrown morphs or not There is no way to save to DSON format without going through DS4.

If you're willing pay the added cost, Dimension3d has a DSF Toolbox that allows you to add morphs without DS4. You'll navigate to the base dsf of the morph that it is for and then your obj. In this case, that obj has to be the unsubdivided morph in order for it to work. There is no need to really subvert the subd.

Quote - In other words - that limitation is always there if you want to save a figure and use it later

But you can't distribute that morph in that manner; that's why the DSON standard is there. If that morph isn't going farther than your computer, then if it works for you fine. However, if you want that morph to be shared or sold in a product, then you need to provide it in a format DSON recognizes.