Adding expenses to an invoice doesn't work

Question

I just discovered the proper way to get reimbursed for expenses, but it's not working for me. When I invoice a regular client, I usually just copy and paste the previous invoice and updated it. When I try to add an expense, nothing happens.

I tested it on a new invoice and it works to add an expense, but not my previous invoices. I need to fix a bunch of invoices from the past 10 months, but I can't get it to work. Any ideas?

jod.z · Answer

NEVER MIND, I figured it out. I wasn't clicking in the right spot. Apparently, I have to click in the left column, I can't just click or double click on the expense to invoke the magic.

jod.z · Answer

I take that back ... I tried to create another new invoice and I can't get the expenses to work. I have three to choose from, but if I choose any of them, nothing happens.