Steps to reproduce:
1. Create a Dynamic Data Definition with two file upload fields.
2. Create a Dynamic Data List with your Definition.
3. Show the Dynamic Data List on a page with a Display portlet.
4. Add a new Record, upload two files.
5. Edit the existing Record by replacing the first file.
6. Remove the second file from the upload field.
7. Select the previous version of the record (Actions/Edit/View History/1.0).
8. Click on the first attached file.
Actual Result: the new one is opened/downloaded.
Expected Result: the old file should be opened/downloaded.
9. Click on the second attached file.
Actual Result: "Not Found" error page is displayed.
Expected Result: the second file should be opened/downloaded