[RCU] Migration problem

Hello, I made a roundcube migration to another server with another ip address. I made a database backup via phpmyadmin and restored it to the new server. knowing that the old server contains a mysql Ver 14.14 Distrib 5.1.73 database under redhat 6.8 and the new server contains mysql Ver 15.1 Distrib 5.5.60-MariaDB under redhat 7.6. The backup and restore procedure worked well. However I can not find the address book and the preferences of the user. Is there a migration and restoration procedure very specific to roundecube so that I find all the data or a support to my problem. Thank you verry much i need your support.