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Adding New Lists to Existing List

Question asked by Heather Siler on Nov 24, 2014
Latest reply on Nov 24, 2014 by Heather Siler
When leads are added to an existing list, does it make more sense to update the entire list by uploading both the old and new leads or import a new list of only the new leads? Will Marketo automatically  remove the duplicates (old leads) if I upload the new list in it's entirety? Which way is recommended?

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