Currently, moving a Jira issue from project A to project B breaks the Team Files attachments. The same happens for Confluence pages. Moving a page from Space A to Space B, breaks the Team Files macros.
Why does this happen?
The Team Files app uses the issue key and space ID to correctly display your attachments where you want them. When you move an issue to different project or a page to a different space, the issue key and the space ID change. Since the Team Files doesn’t recognize the new values, the attachments and macros are broken.
How to fix it?
At the moment, the only solution is to remove the broken attachments and re-attach the files you need in your issue and page. We have a feature in our public roadmap to address this issue: