Often times I work on a long invoice that I don't finish the same day it was started.
For example: If I start an invoice November 1st and choose "Net 30" as the payment term but actually finish the invoice November 7 and send it that same day, the client will have 7 less days to pay.
Zoho Books should be smart enough to update the "Invoice Date" or at least ask if I want to update before the invoice is actually sent.
Thanks, Xavier