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

Green1,

The converter was never removed so yes there would be some left over fluid in the system... I'm pretty sure my converter does not have a drain plug. Would the upper half of the converter drain back to pan?

I have a remote cooler that I have not removed the lines from as well. The cooler lines run horizontal with the feeds at the bottom... Would they drain back to the pan overnight?

I didn't run +4 fluid in it before so whatever was left after I dropped the pan the last time would mix with the +4... What do you suggest I do?