When copying an existing Web Invoice that contains an attachment, in this scenario, the system copies everything about the Web Invoice correctly, except the resulting Web Invoice has an attachment that is different from the copied Web Invoice.
We are currently evaluating this issue and will update this article when we have more information.
Steps to Duplicate
1. Log into Webportal 2. Click to view Web Invoice 3. Notice the attachment is a particular PDF > View 4. Click to copy the Web Invoice 5. View the new invoice created > add a distribution and save 6. Click to view the new invoice again > View the attachment > Notice this is something completely different