It sounds like you may have had PDFs uploaded on the return, and when you made the copy to correct the SSN, the PDFs didn't get copied.

To resolve this: 

1. Go to Electronic FIling > e-file PDF/Miscellaneous.
2. Click the "e-file Attachment" link at the top right.
3. Click the "X" to delete the tab(s) where you have documents showing as uploaded.
4. Re-attach the PDFs on this screen.

- Rebecca