Hi Kit,
Have you considered changing the due date column to read renewal date? You can do this in your PDF themes under Settings. Unless you use the due date column for these particular customers, you can just change it for this purpose.
I hope this helps!
I had but we use due date already. Also, there may be multiple items on a single invoice that renew within the month that we are billing for. Having each item, sometimes 10 or more, on a separate invoice is going to annoy our customers no end!
I can see your point. Unfortunately the only thing that I can suggest for now is that if you don't use any of the fields on the invoice lines, to rename them and use those.
As far as building an additional column onto the invoice, we do not have any plans on the road map for this at the moment but if it does collect a number of votes and is a highly requested feature we can certainly look at some development work to change the invoicing layout.
Thanks,
Tom