My dear, we X-posted.

3D apps and Poser.

Poser has 2 ways to load morphs:

Group by group.
Or as a full body morph.

Wings, Hex, Silo, Blender or Zbrush.. none of them can change that.

Group by group.
You will have to export each group seperadly.
Rebuild shins, feet and toes in your 3D App into one mesh again.
Morph => ha-ha-ha- seems to be the easy part.

Export the morphed groups group by group again.

Load the morphs group by group back into Poser again.
And then if you want your morph.
You will have to dial it in each and every group seperadly..
Or start making dependencies.
Without mistakes, you are busy for a day or 2.

See the long workflow??? And lots of possibilities to have mistakes or failures.

Or? use my workflow.
Load the figure object file with "merge groups selected".
Morph your shins, feet and toes.
Export from Hexagon, go trought uvmapper free to get the groups and uv data back.
Import as full body morph in Poser.
Goto figure body actor and delete the full body morph.
In the popup menu:
Unselect the morphed groups you want to keep.
Both, shins, both feet, and both toes. And click OK.
Done.

One dial in the figure body actor that controls your morphed shins-feet-toes.

it does not come more easy than this...
In any 3D application.

best regards, Tony

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!