How to change sort order for Attachments in Manage Invoices page?

Summary:

Customer have two attachments. Invoice image in PDF-file and URL for more details. Due to how the integration works, the URL is added last. This causes the URL attachment to be shown as the first attachment when handling the invoice. If user want to seen invoice user need to click (1 more...) link and popup window open and show all attachments.

Content (required):

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):