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I want to keep a dummy copy of all the data for a custom object including notes and attachment for a custom object. As a result I am using data export using data management to export the data. Will this delete data as well in salesforce.

marked as duplicate by sfdcfox, martin, Mohith Shrivastava, Dave Humm, Derek F Feb 11 '17 at 16:27

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If you mean this, then no, your data will still be in your database. You are merely exporting a copy. :-)

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