Reunite UV tiles in one main shader

Hello to all,

I have a very specific question as I am working between RealityCapture et Substance for texturing my photogrammetry models.

As you can see on the photo, when I import my model, the two UV tiles 1001 and 1002 are separated into different shaders. I tried all the export options from RealityCapture but no result. Any ideas how I can runite them in one shader ? Thanks a lot!