I've been a CRM user for about a year now, and have been invoicing out if it.

My major issue is that I allow my clients to pay part invoices over time, and there is no way for me to track what is still remaining, unless I do it manually (at the moment I am just leaving notes against the invoice), but this means that I can not just run a report!

I am looking into Zoho Books, but I need to know if it is integrated with the Invoices section of CRM... 

Thanks!

Ben