Thank you for your reply. It's still not doing what I need it to do. Let me explain:

I need to send monthly invoices that are DUE on the first of every month, but I need to send them 30 days in advance. So for example, the next invoice that will need to go out will need a  DUE DATE May 1st, but needs to go out April 1st with an INVOICE DATE of April 1st.

Here's what I've tried (continuing to use the May 1st example above):

1) Create 30 days in advance. Interval: Monthly on 1st of every month. Terms: Net-30. This would send the invoice on April 1st with a May 1st INVOICE date and a May 30th DUE date. Which is not what I wanted.

2) Create 30 days in advance. Interval: Monthly on 1st of every month. Terms: First Day of Month. This would send the invoice on April 1st with a May 1st INVOICE date and a May 1st DUE date. Which is not what I wanted.

3) Create 0 days in advance. Interval: Monthly on 1st of every month. Terms: Net-30. This would send the invoice on April 1st with an April 1st INVOICE date and a May 1st DUE date, HOWEVER it would then send a May 1st INVOICE with a May 31st DUE date, which I don't want. So any month that has 31 days, or February would not be correct.

So how do I create a monthly invoice that is DUE on the first of the month, but is SENT 30 days prior and has that send date as the INVOICE date?

Thank you.