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Why Amplitude create a new Amplitude ID after anonymous events

  • 3 January 2023
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K
  • Kai
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Currently we are doing experiment using Amplitude ID as our bucketing key. We learned from https://help.amplitude.com/hc/en-us/articles/115003135607-Track-unique-users-in-Amplitude#h_4caf2577-336a-4b32-8a6a-c7245b5f2364 that a user would be assigned to same Amplitude ID after anonymous events. However, after we did some tests, the actual behavior was Amplitude would create a new Amplitude ID and than merged them. It may cause variant jumping when the first a anonymous user logging in. How can we solve this problem?
 

 

 

 

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Best answer by eddie.gaona 5 January 2023, 21:08

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eddie.gaona
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Hello @Kai when would the user see the experiment experience? 

Are anonymous able to see the Experiment experience before logging in? If they have to log in it’s best to wait to fetch the variant until they complete that step and enable Sticky Bucketing to avoid variant jumping.

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