For those interested in converting shoes, I bought Ava Boots for G8F at DAZ on a good sale. The conversion process illustrates now to rig shoes that arrive in a posed-foot format. These boots in DS were smart props, which surprised me because boots almost always conform (or "dforce"). Once I converted the boots, I realized why. The mesh distorts if you bend the foot. SO, in the end, I also saved smart props since I had done all the fitting and morph brush work for the rigging.

Here are the boots imported as obj's from DS.

I Posed La Femme's feet to match. Here's the view from below the ground plane.

Next, use the morph brush to perfect the fit and rig each obj in the fitting room to non-zeroed LF, including the body parts down to the foot. Go back to the pose room and bend the boot's foot to fit zeroed LF.

Now go back to the fitting room and rig the boot not-zeroed to LF zeroed. Again, rig down to the foot. Here are the two boots conformed to LF. Note the signs of distortion at the ankle bend on the fronts.

Here are the boots withLF's feet posed and saved to the Pose library.