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DOC-201 added merge call [netlify-ignore] #1696

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Jun 25, 2021
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DOC-201 added merge call [netlify-ignore] #1696

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9 changes: 7 additions & 2 deletions src/connections/destinations/catalog/mixpanel/index.md
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Expand Up @@ -197,10 +197,15 @@ If you're not familiar with the Segment Specs, take a look to understand what th
analytics.alias('newUserId')
```

**Important:** Mixpanel used to require that you call `alias` in all libraries to connect anonymous visitors to identified users. However, with the release of Mixpanel's new [Identity Merge feature](https://help.mixpanel.com/hc/en-us/articles/360039133851#enable-id-merge) this is no longer necessary. To enable ID Merge, go to your Mixpanel Settings Dashboard, navigate to **Project Settings > Identity Merge** and enable the setting from that screen. If you are _not_ using this setting, use the instructions below.**
> info ""
> **Important:** Mixpanel used to require that you call `alias` in all libraries to connect anonymous visitors to identified users. However, with the release of Mixpanel's new [Identity Merge feature](https://help.mixpanel.com/hc/en-us/articles/360039133851#enable-id-merge) this is no longer necessary. To enable ID Merge, go to your Mixpanel Settings Dashboard, navigate to **Project Settings > Identity Merge** and enable the setting from that screen. If you are _not_ using this setting, use the instructions below.


As soon as you have a `userId` for a visitor that was previously anonymous you'll need to [`alias`](/docs/connections/spec/alias/) their old anonymous `id` to the new `userId`. In Mixpanel only **one** anonymous user history can be merged to **one** identified user. For that reason you should only call `alias` once, right after a user registered, but before the first `identify`.
As soon as you have a `userId` for a visitor that was previously anonymous you'll need to [`alias`](/docs/connections/spec/alias/) their old anonymous `id` to the new `userId`. In Mixpanel only **one** anonymous user history can be merged to **one** identified user. For that reason you should only call `alias` once, right after a user registered, but before the first `identify`. To merge identities in Mixpanel, send an identify call with both the previous anonymous ID, and the new user ID, as follows:

```javascript
analytics.alias('anonId','newUserId');
```

You'll also want to `track` the action that caused the user to be identified or created. Read our [guide on how to identify new users](/docs/connections/spec/best-practices-identify/) to learn why.

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