1. I go to admin.php and I click on "upgrade to 1.4 beta" 2. A window appears suggesting me to use the cli installer along with the correct bash line (perfect done!) 3. I successfully finish the cli installer 4. I reload the browser window 5. A "Rebuild Master Data" button appears. I click on that button, even I just rebuild within CLI. My suggestion is to write something like "The master data was rebuild during the upgrade / install process. You can rebuild it again using this button".