I don't know about Hexagon, as I'm solely working in Wings3D myself.

But since ancient times, if you as much as change or delete a single polygon from an object file, any morphs made for said object file will stop working in Poser.

As you have Poser Pro 11, try loading the figure you created with your NEW object file and also the original figure based on the old object file.

Then under "Figure", select "Copy Morphs From..." and follow the instructions.

This will "average" a new set of morphs for the modified object file.

Depending on the shape of the object, this might might or might not work well.

I think it was the user "Cage" who wrote a python script with a similar functionality, but based on another principle.

So you can try that, too.

If the result is still unsatisfactory, I guess you need to create a new object, but this time with the morph already applied, so that it will match your morphed figure.