Hi @julietavuan,
That should work just fine – however, if you’re receiving unserialize warnings in your database, then it means that some of your data was stored there by a version of PHP that was probably considerably older and somewhat incompatible. After the upgrade, review your journal settings to ensure everything is as expected and re-save the forms; this should cause the warnings to go away.
Regards,
Alec Smecher
Public Knowledge Project Team