The color intensity is a value that gets calculated from the color, and saved back as the color. It won't appear separately in the glTF file. For example, if the material color is (2, 1, 1, 1) then the intensity in the editor will show 200 and the color will be displayed as (1, 0.5, 0.5, 1).
Although Ultra treats alpha blending and alpha masking separately, in the glTF format they are two different settings for the alphaMode value, so they cannot both exist in the same material in a glTF file. (This is fine, as you would never want to use them together.)