[Accelo]

Nice to have a picture of the pan.
It really looks pretty good.
In my experience the coolant is still pressurized with the engine off and it migrates to the transmission at that time.
If you have had the radiator checked and have changed the fluid and confirmed the level. Does the transmission work as designed?
Proof is in the function, guess it's time to drive it and see if it works and continues to.
That's the bottom line. Unless their is a question I missed.
Cheers