I have this problem today.
I have added a Lead with an empty e-mail. Then I have added an opportunity and finally, I have added a quotation.
Of course, when printing the quotation, customer’s e-mail appears as “None”. Then I have set the actual e-mail address for Lead, but quotation’s e-mail still appeats as “None”.
How can I set the customer’s e-mail when quotation comes from a Lead?