Click Accounting > Expenses > Update Filter to show status your expenses is in (Approved/Accepted, Approved/Not Accepted, Not Approved/Not Accepted)
If your Expense has been Approve/Accepted, you will need to Unapprove the Expense in order to make an Edit. If your Expense is in one of the other categories you will skip this step of unaccepting.
Change your filter to Approved/Not Accepted or Not Approved/Not Accepted, then click Edit next to the Expense where you need to load a file or replace an existing file.
If a file already exists, you will click the trash can icon to remove the existing file. Then Click the Drag & Drop box to browse for your file.
Once you've uploaded your new file, click Save and Approve. Then from the list of Expenses > click the ellipse icon > Accept to finalize the Expense.
