If there was water in it - you will see very milky ATF in there and if driven for about 100 miles or so - you would have a transmission that goes

P
N
N
N
N
N

rather than
P
R
N
D
3
2
1

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)