How do I retrieve Chat history messages from a deleted user?

Problem

Chat messages were removed after deleting a user and are looking to recover the Chat history in Vault.

Environment

Google Workspace 

Vault

Solution

To use this option, a Workspace Enterprise Standard, Enterprise Plus or Business Plus is needed to feature Vault:
  1. Sign in to vault.google.com.
  2. Click Matters.
  3. If the matter you want to run the search query in exists, click it to open it. Otherwise, create a matter
  4. For the service, select Chat.
  5. Select the source data to search
  6. Select the entity to search

Support help articles for Vault: 

Use Vault to search Google Chat:
https://support.google.com/vault/answer/7654076

Get started with Vault search and export:
https://support.google.com/vault/answer/6161352

Compare Workspace Editions: https://support.google.com/a/answer/6043385?co=DASHER._Family=Enterprise&sjid=17321123068437162319-NA#core:~:text=Calendar-,Service%20availability,-Compare%20instead%3A