My car pushes forward when slowing down on 2001 BMW 740i

So when I drive and as I pull to a stop, I would say when the transmission goes down to firstit pushes forward. Its a automatic and the wierd part is when in drive, it is as smooth as can be. I do think that it may be the transmission but im sceptical. if anyone can tell if this is common or a sign of a future problem, I would like some input please. It doesnt push bad as far as causing a accident but noticable enough to wonder. Thank you very much

Asked by for the 2001 BMW 740i
any warning lights come on? possible engine related or it could be transmission related if the torque converter is not slipping correctly (not releasing) i would recommend having it checked out