I was recently allowed to transfer my OTRS to CentOS 6.5 +MySql

. I copied my custom dtl files as well as custom language files. However, after the move the custom translations do not work.
We had changed "neues Telefon-Ticket" in German to "neues Telefonticket". But this change is not reflected on the ticket screen. I restarted the apache server, mysql and deleted OTRS cache, yet no success.
What could be the reason?
OTRS 3.3.x (private/testing) on Windows Server 2008 with MSSQL database.
OTRS 3.3.x (private/testing) on CentOS with MySQL database and apache