Change record status: 
Project: 
Introduced in branch: 
8.7.x
Introduced in version: 
8.7.0
Description: 

The new Entity Update API added in #2984782: Add an API for converting entity type schemas to (non-)revisionable/(non-)translatable, with or without data (change record: https://www.drupal.org/node/3029997) creates a backup copy of the existing entity data, which is now preserved by default in the database after a successful update process.

This behavior can be controlled by the new entity_update_backup Drupal setting, which defaults to TRUE. Setting it to FALSE will instruct the Entity Update API to remove the backup tables at the end of a successful update process.

Impacts: 
Site builders, administrators, editors
Module developers