Separate materials on a single mesh from Blender

[fluffy-critter]

Hi, I modeled a character in Blender which has two separate material IDs, and each material has its own UV map. When I import into Armor Paint (either as a .blend or an .fbx) I only see a single material ID on the entire model, and I can't figure out how to paint onto the two different UV maps separately. I looked through the manual and other discussions here and haven't found anything about preserving material IDs; the closest I found was someone asking a similar question about Maya but the answer doesn't appear to be relevant.

Is there something I should be doing in my Blender export and/or the ArmorPaint import?

Thanks!

[fluffy-critter]

If I export from Blender as .obj then I at least get the separate material layers in ArmorPaint. However, they're still sharing a single UV map.