Using Email address from contact for subscription

Using Email address from contact for subscription

We have a business process that takes a Lead from CRM, converts to an Account, and then syncs over to Subscriptions as a customer. We then attempt to create a new subscription for this customer and it asks for an email address. There is only one contact with one email address, but we are not allowed to use that address for the customer because it is already in use for the contact. Is this correct?

The only workaround is to update the contact with a fake email address and then use the real email address for the customer. Is there a way to use the email address for both the subscription customer and contact? We will always have a contact with an email address in the CRM. When this gets synced over we would like that email address to be used for the "customer". I assume this is how most people would expect it to work.

Any help would be appreciated!

Thanks,
Alastair