My users are revamping their website and will have a new domain to add to Marketo. The old domain will still be available and connected to Marketo. However the bulk of the marketing will be done via the new website and domain. I know we can add additional domains, and track visitors to those domains. However, we would really like to "move" the cookies across. I know this is not possible technically, but is there anything clever we can do to re-cookie the leads and tie them back to their record in Marketo, aside from running a tracking campaign from Marketo to entice leads to click to the new website?