I usually export a list of customers from Marketo, in order to tailor a list for specific email campagins. Usually this is related to proximity to a specific region. I then re-import a list under a different name for the email campaign. If the lead already exisits in Marketo, will my re-importing effect anything? Is there a better practice for exporting leads, editing a list, and then using that list for an email campagin?
Thanks!