Substance painter export hdrp mask map roughness

Please help me with Substance Painter. I'm trying exporting Unity HDRP (Metalness), but in Mask Map roughness is black... which is Alpha channel - Glossiness(from Converted maps tab). While exporting i'm getting "error": [MapExporter] The input map ' Glossiness' needed by the map '...' of the texture set '...' isn't available because: 'Glossiness' channel is missing in your texture set.

I'm assuming this is bug...?

Because, in the tutorials i didn't see them use Glossiness in Texture set.