So I have two UV maps. One is a UV map for my bump map and other texture, while the other is just for the base texture. I want to export my mesh (it's a single mesh) while keeping both UV maps and being able to import the bump and texture maps without having to do anything else. FBX and OBJ are preferably what I want to export as.

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    $\begingroup$ yes with fbx but not with obj. Blender will automatically add All the uv maps to fbx as shown here - blenderartists.org/t/… $\endgroup$ – J Block Dec 22 '20 at 19:16
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    $\begingroup$ alternatively you can bake one uv map's texture to a new bump texture on the first uv map if you need obj $\endgroup$ – J Block Dec 22 '20 at 19:18

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