@Miss B What do you mean he had no Mat-Zone. Mat zone you set up in the modeler . Substance Painter show them up and you can texture each of them separate .

As you see i can make even parts invisible. But for sure you have to set up at first the material zones in your modeler. But maybe i understand you wrong?

La vie est éternelle. L'amour est immortel.

“Dwell on the beauty of life. Watch the stars, and see yourself running with them.”
― Marcus Aurelius,