A friend is trying to morph a set of jewelry.  The Jewelry is a separate figure that conforms to another figure.  She's trying to use a magnet to reshape the large bracelets.  Each bracelet is a "forearm" of the jewelry figure.  No matter what she does, the magnet has no influence on the jewelry forearm whether the figure is conformed or not.

She had the jewelry's forearm selected when she made the magnet.
The jewelry forearm is not  locked.
The jewelry figure itself is not locked.
There are multiple material zones in the jewelry forearm, but the magnet has no influence on any of them.
Even if she adds all the other elements of the figure to the magnet, nothing happens.

She even exported the forearm out as an .OBJ and then imported it as a prop.  A magnet still had no influence on it, even as a prop.

I ran out of ideas.