I am trying to make a rocket exhaust .dae/collada object for a trajectory software called AGI/STK. A muzzle flash would be the same thing. I can import a .png file with transparencies into blender without any issues. However, when I export a collada file I repeatedly get the same result of the transparency showing along with the picture.
I have tried Blender 2.7, 2.8, and 2.9. I have attempted to use Blender Game, Cycles, and Evee. I have tried to export directly, and I have tried to bake the texture. I always end up with the same result. Any help that will aid me in making the transparent portion of the .png file invisible, would be much oblidged.