Wigglyamp - would you have the reference to that requirement?
I've done a bit of googling but cannot find a definitive "law" on it. I can find various proceedings and EASA opinions...
The ability to use an 8130-3 form with a new (not used or overhauled, even if it was yours from new and you sent it off for an overhaul) part is a long standing concession, and vitally enables parts to be purchased from the USA directly, usually saving a lot of money.
But the requirement for the 8130-3 to be issued by the manufacturer seems to be a new thing. What if one buys a new and unused part and it has an 8130-3 from the manufacturer's authorised dealer?