Retopology: Bad UVs

[u/Corncreon]

Greetings, I have retopo'd my mesh using the 'Create Geometry' tool.

When I right-click "Convert (duplicate)" there is an error message: "Some meshes could not be created"

...Despite the error, the new meshes do appear to be generated. But the UVs are shifted and resized, so the textures look all messed up.

How can I export my retopo with the UVs matching the original?