Removing grass skirt paired with custom shoreline texture?


Resource contributor
I have been working on redoing the shoreline textures for my Solomon Islands scenery. I'm replacing the old beach textures with a custom version that fades into the water a bit better. However, I have noticed that although I used the original beach texture file (scaled to a higher resolution) and layout as a base to work on, my shorelines all have a grass skirting beneath them (Whereas the original did not). Is there a way to remove this so that my shorelines will blend how I intended them to?