Jira Gadget URLs on Confluence pages are not updated following migration

Issue Summary

On Confluence Server/Data Center, if a page contains a Jira gadget, the macro fails to work once the page is migrated using the Confluence Cloud Migration Assistant. This is because the gadget refers to the original Jira URL. It is not possible to manually edit the macro.

Steps to Reproduce

1. On Confluence Server:
   1. Ensure Confluence has a valid application link with a Jira server instance
   2. Create page with any macro:
      1. Pie Chart gadget
      2. Road map gadget
      3. Stats gadget
      4. Filter results gadget
      5. Two dimensional stats gadget
      6. Sprint burndown gadget
      7. Sprint days remaining gadget
      8. Sprint health gadget
      9. Version report gadget
2. Migrate the space with the target page to Cloud using Confluence Cloud Migration Assistant
3. On Confluence Cloud:
   1. Navigate to the migrated page in Cloud
      The macro will not correctly render
   2. Attempt to edit the macro by clicking/hovering over the macro.

Expected Results

1. When migrating, Jira gadgets for a migrated Jira instance should render correctly

Actual Results

1. Page displays:

   Error rendering macro 'gadget' : The gadget at https://jira.example.com/rest/gadgets/1.0/g/com.pyxis.greenhopper.jira:greenhopper-gadget-rapid-view/gadgets/greenhopper-rapid-view.xml was not added to this Confluence instance yet.

Workaround

Contact Atlassian Cloud migration support and mention MIG-1216