You should Reverse Faces when exporting, yes. But that just determines whether the polygons face you or face away from you (won't affect a morph file).

In fact, I don't think any of the options for importing or exporting make any difference at all for a morph target.

Are you sure that you're using Riptide for both importing and exporting?  Both of those menu options are found in the 'Plugins' menu instead of the regular file menu.

If you're certain that you are using Riptide for both import and export (the Riptide Options dialog opens up each time), then either the mesh is bad as it's exported (which would be strange) or something else is re-ordering the vertices.

Things to try:

1. export the head, then re-import it as a morph.  when using the that morph dial, 'nothing' should happen at all.

2. if the above step works, import the head into C4D (using Riptide) and just move ONE vertex (or one polygon) somewhere that you can verify later.  Then export that (using Riptide) and import that into Poser as a morph and see if that works.

...it might also help if you post an image of what you're calling 'explodes'.  I the entire head moving up/down? or does it look like random vertices are moving at random, making a very zagged mesh?

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