Ok........ to be honest.......... I'm confused.
Firstly in 2016 the ATF changed the filing requirements to have all members of the trust to submit personal info so they had the identities of the trust members.
And so you are saying that you have an existing trust (prior to that change) and so simply add items to it, without being "challenged" (for lack of better word) to update the trust with that personal info?
But the OP is "....thinking of getting my first tax stamp item............" so he'd fall under the new requirements and in setting up a trust, he'd need to submit the personal info of all involved.
Or?????
PS:
Right here............. was this struck down? Or?.........since it requires background/fingerprint etc for all parties, and it seems any transfer :
Background Checks for Responsible Persons (Final Rule 41F) | Bureau of Alcohol, Tobacco, Firearms and Explosives (atf.gov)