[otrs] Prevent unlocking a locked Ticket on move

When I lock a ticket and move it to an other queue, the ticket is unlocked. In earlier versions of OTRS the ticket stayed locked. How can I prevent unlocking a ticket when moving it? I think the reason is this statement in ZZZAAuto.pm $Self->{'Ticket::EventModulePost'}->{'99-ForceUnlockOnMove'} = { 'Event' => 'TicketQueueUpdate', 'Module' => 'Kernel::System::Ticket::Event::ForceUnlock' }; I tried already to disable it in Config.pm but it didn't work: $Self->{'Ticket::EventModulePost'}->{'99-ForceUnlockOnMove'} = {}; $Self->{'Ticket::EventModulePost'}->{'99-ForceUnlockOnMove'} = undef; $Self->{'Ticket::EventModulePost'}->{'99-ForceUnlockOnMove'} = We are using OTRS 2.4.7, Patrick