Is it possible to import UV maps without reimporting the asset?

Development Asset Creation
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1

I have an asset that has a main UV map and a secondary one that is used for details. The UV map of the details is an atlas and I will have to modify it to add/remove textures. So that means I would have to unwrap again and reimport the map.

Is it possible to reimport the UV map alone?

Also, can I export a UV map to modify it in Blender and then reimport it?

PS: I know I can remove and add UV channels in UE, but I don’t want to do the unwrapping in UE since it way more difficult to manipulate than Blender and I have some addons there.

2

I typically just export and override the obj/fbx file from Blender and then right click and reimport within UE.