Others are saying this application "converted"
That would be true for a pre-qualification request since pre-qualifications are not applications under HMDA, but if you have a qualified pre-approval program then the date of application is the date the pre-approval was requested since that request is an application under HMDA.
Since a property was identified this request would be reported as an approved but not accepted with the application date the date the pre-approval request was received and a Code 1 under Pre-approval.
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The opinions expressed are mine and they are not to be taken as legal advice.