Thanks for the quick response David! No, we use Marketo as our Marketing database and SFDC as our acquisition and retention database. All contacts in SFDC are in Marketo, but not the other way around. This helps us keep SFDC clean while nurturing less sales ready leads. My problem, is that when we import a list of leads into Marketo, it is not automatically deduping it off the existing database so we end with a lot of duplicates. I'm slowly working my way through them all manually, I was just wondering if there was a different way of going about it.