Water in the transmission...

I had a 727/440 combo in a truck flood about 10 years ago. Silt almost to carb. Drained the trans, and then brought it in for a trans fluid flush. It worked fine. Had water in another 727, didn’t drain, except out on the barn floor, ffwd 7yrs or so, drained, blew out, and cleaned. No water when I cracked the pan, but it worked for about 20 mins before it forgot where reverse was and pissed about a gallon out the front sump.