Ok, What have I done now... (904 problem?)

i dont think getting fluid out of the converter is going to make any difference. i have mixed atf4 with dex 3 and dex3 with type f and type f with atf4 , and i have never had anything go wrong or noticed any change. i dont think the 1 quart of leftover converter fluid is going to matter. if it really worries you about the fluid, fill it back up with dex 3. myself, personally , would just re-use what you have, but others say different.