Support for Drupal 7 is ending on 5 January 2025—it’s time to migrate to Drupal 10! Learn about the many benefits of Drupal 10 and find migration tools in our resource center.
This a whole new module! It is based on one of the old submodules from the 7.x-1.x branch.
New releases (version 2.x and up) will deal only with field-syncing for Entity reference
There is no upgrade path from version 1.x and your site will probably break badly if you use this module to upgrade from 7.x-1.x.
Reference Field Synchronization allows you to keep 2 Entity reference fields in sync.