Quote History Quoted:
You filed 5320.20s when you moved. Put your current address as the To, and checked the box to say they won't be returned to the original location.
So, again, your old address has nothing to do with it.
View Quote
This.
And trusts do not "have an address". If your trust document mentions an address, it was only there better identify you as the executor of the document. If you really want to keep the trust strong and avoid possible confusion, add an amendment to the trust saying you moved and list your new address. But that all done for you and your trust.
As far as the ATF knows, your current address is the address you use (because you filed that old 5320.20) and the original address is out of the picture.