Problem
You saved changes to a document and replaced the file, but the new file is not attached — the other changes (name, path, access) were saved correctly.
Possible cause
File upload happens as a separate step after the document details are saved. If the connection was unstable at that point, the upload may have failed even though the other changes succeeded.
Solution
Go back to the Document Hub list and open the same document for editing.
Upload the file again in the Attachment section.
Click Save changes.
Check your internet connection — a stable connection is required for file uploads.
If the problem persists, contact support and include details about:
The file format and size of the file you tried to upload.
Any error message shown.
When the issue occurred.