No. I had a client surrender then transfer 12.
But....
There was a quirk in the portal. It generated the printable FA10s, but only actually recorded the first four. The transferee had to "register" the remaining guns in order for them to show up in his name on their system.
Interesting. Why did the transferee "register" the remaining? there is no requirement to have guns that are registered (this is not NY state) or for the recipient to take action. As I read 140 128A and 140 131E the burden of using the online portal is fully on the seller. The buyer must present their LTC/FID, but that completes their obligation. The seller is responsible to insure that the recording of the transaction occurs.
When I tell people the ways they can end up legally possessing firearms (generic term, not MA definition) without them being registered, this is one of the ways
1) bring them in when you move here and apply for LTC within 60 days, no need to register
2) have them prior to 1968 or whatever the date was that records had to be kept
3) state lost or threw out records (water is bad)
4) seller failed to properly register/record transfer. A lot easier when it was paper (fail to mail, etc). Not the buyers problem
5) Bring them into the state or assemble them less than 7 days ago (you have them but have not run out your 7 day window to register)
There might be other ways.
So curious why they did the registration themselves when they acquired them legally and even have paper proof.