Partner Center app created as EXE/MSI by mistake - need MSIX/PWA path while preserving reserved app name

Tracking marker: NMG-MSIX-PACKAGE-TYPE-07012026

Hello,

I need help identifying the correct Microsoft-supported path for a Microsoft Store app record in Partner Center.

App name: Not My Grandkid

Current product type shown: EXE or MSI app

Status: Not started

Package uploaded: none

Submission made: no

Apps and Games access: granted

The app name Not My Grandkid is already reserved for this product, but the product was accidentally created in the EXE/MSI lane. We need to publish through the MSIX/PWA path instead.

I do not want to delete the app/product record or risk losing the reserved app name.

I tried Windows Developer Support > Non-Technical Support - Dashboard > App Submissions & Management, but that route only launches Copilot. Copilot gave general answers but did not create a human support ticket or provide a clear safe button path.

Please advise:

1. Can this existing EXE/MSI product be reset or converted to the MSIX/PWA path while preserving the reserved app name?
2. If not, what is the safe Microsoft-supported process to preserve or transfer the reserved name so the correct MSIX/PWA product can be created?
3. Should I leave the current EXE/MSI product draft untouched until Microsoft support performs this change?
4. What exact support route should I use if this requires Partner Center backend support?

Thank you.