Is there a way to change the ALPHA MODE that shows up in the GLTF output template?

I use Substance Painter to generate a LOT of PBR materials for use in another program. I use the gltf PBR Metal Roughness output template for this. When I import the PBR materials into the target program they ALWAYS have the alpha mode set to BLEND. I edited the bin file and found text that says:
"alphaMode": "BLEND",

This causes all of the materials to appear incorrectly in the target program which needs alpha mode to be OPAQUE. So, I have to manually edit each PBR material, change the setting and save it. Small annoyance, but it happens ALL the time.

Is there a way in Substance Painter to control what the alpha mode is on the output, to toggle it, or at least set it to OPAQUE?