BC Observatoryunofficial, made by waldo
code change · fixAL Developmentofficial - Microsoftreviewed - checked by Opus

#10055 Fix: migrating a document attachment deletes shared Tenant Media

Document attachment migration no longer deletes shared Tenant Media records, preventing silent loss of content when attachments are copied to posted documents.

Open in Claude10055.mdPull request #10055

Pull request · merged into main (BC30) on 2026-08-17 by Groenbech96 · 26 files (+198 -7), 1 AL · fix · tier official · reviewed (checked by Opus)

What changed

  • Adds guard to prevent deletion of Tenant Media when other attachments reference the same media row
  • Introduces three new unit tests verifying shared media protection and proper cleanup when attachment is the sole owner
  • Fixes silent skipping of copied attachments during external storage migration that left records with missing content
  • Protects internal Tenant Media deletion the same way external blob deletion was already protected
  • Behaviour changes for users or extensions.

AL objects touched

Context

  • Work items: AB#646505
  • Labels: AL: Apps (W1), Build: scripts & configs, Team: Integrations
  • Systems: development
  • From the description: “Deleting that row on behalf of one attachment destroys the content of every attachment copied from it.”

Source: metadata of a merged pull request in microsoft/BCApps (bcapps): title, labels, changed paths and counts, with a summary in our words. No source text and no description beyond one short quote (D10, D61).