Which is about all the good that copy will do you.The last few transfers I have made through a dealer to another person, the dealer produced a copy of the FA-10 for the buyer. In all cases I have asked for, and received, a copy of that FA-10 for my records.
But that would not necessarily be accurate either. I can then just go to a random FFL, look at their license number and go to the portal and “transfer” the gun to them, but still keep the gun. If there is a question about the gun at some point, show them the “transfer” record and claim you no longer have the gun. No more boating accidents are needed then.
I've run into an issue where a gun was sold to an FFL and then purchased by me, the original owner then got into legal trouble and the police sized my firearm. The trouble was non-violent in nature and had nothing to do with firearms at all.
All the EFA10 paperwork in the world didn't matter, might as well have wiped my ass with it.