---
title: "Discussion on \"SFMC Import Update Types: Add Only, Add and Update, Overwrite\" | Hashnode"
description: "Discussion on \"SFMC Import Update Types: Add Only, Add and Update, Overwrite\". SFMC has four import update types. Picking the wrong one corrupts the DE in ways that don't show up until the next campaign runs. Here's how we pick on production engagements."
url: "https://hashnode.com/posts/sfmc-import-update-types-add-only-add-and-update-overwrite/6a127d23ba30e45856c5bc9f"
---

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# [SFMC Import Update Types: Add Only, Add and Update, Overwrite](https://sapotacorpvn.hashnode.dev/sfmc-import-update-types-add-only-add-and-update-overwrite?utm_source=hashnode&utm_medium=feed)

SFMC has four import update types. Picking the wrong one corrupts the DE in ways that don't show up until the next campaign runs. Here's how we pick on production engagements.

May 24 · 4 min read · sapotacorpvn.hashnode.dev  
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-   [#salesforce](https://hashnode.com/tag/salesforce)
-   [#sfmc](https://hashnode.com/tag/sfmc)
-   [#marketing-cloud](https://hashnode.com/tag/marketing-cloud)
-   [#data-extension](https://hashnode.com/tag/data-extension)
-   [#import](https://hashnode.com/tag/import)

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@sapotacorpvn · Hanoi, Vietnam

  
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