Normal Map Invisible for Multi-tiled UVs
I've searched all over for any answers to the issue I'm having with no luck. I created a low-poly mesh in Maya, UV mapped the mesh over 3 separate tiles, then sculpted it in Mudbox to extract the normal maps. I want to work on it in Substance Painter, but the normal maps only show up on UV tile 1001. Each part of the model has a different material, so thats not the issue. I don't think the exporting from Mudbox is the issue either, since they show up fine on the 1001 tile.
This is the normal map placed on the correct UVs in 1002. It is not visible in the viewport.

This is the normal map placed on the incorrect 1001 tile. It is visible in the viewport no matter what map I plug in.
I'm posting here because I'm lead to believe that it is an issue within Substance Painter. If it isn't, at least I could narrow it down and keep researching.
Any help?
