How to import more than 100 morph targets from 3d Max

Can anyone tell me how to import more than 100 morph targets for a skeletal mesh?

I’m sure that in past versions of the engine you used to be able to reimport the mesh, with a different set of morph targets, and the old morph targets would remain with the new ones being added.

However, now it seems that the existing morph targets always get overwritten.

The docs confirm this: “If you import and add morph targets to an existing Skeleton with morph targets already applied, the existing ones will be overridden.”

Does this mean that there is now no way to import more than 100 morph targets?

Thanks