How to retroactively De-Anonymize UID

  • 14 November 2023
  • 1 reply

Hi - 

We had previously had the UID anonymized in our amplitude- android integration. But now we have integrated a connection with our Database UID's . So that when a user signs up - it is the same UID on amplitude as our internal Database. 

We are trying to retroactively find a way to get the UID's that were anonymized mapped to the proper UID in the Database. Does anyone have any guidance on how we can retroactively De-Anonymize the UID’s and get them to match the propper UID in the database for each user?



Best answer by Saish Redkar 15 November 2023, 19:13

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Hi @Griffen 

Looks like you are trying to retroactively merge user IDs based on new values?

If that’s the case, then User IDs cannot be merged. If you create/update a new user ID for an existing user, Amplitude will recognize them as different unique users.

Here’s more -

The alternate approach will be to reimport your event data with the correctly identified user ids into a new project.

Let me know if I have the correct interpretation of your question.