I am going to offer a differing opinion based on how I'm reading the original post.
Applicant applies for an ARM loan. It is approved but the applicant changed their mind and requested the terms be changed to a fixed rate product. The requested changes are approved and the loan is consummated.
We would treat this as an amended application and only report the origination.
_________________________
The opinions expressed are mine and they are not to be taken as legal advice.