Fixed bug# 6314 - Upgrade 2.4.x -> 3.0.x - older tickets in database are marked as unread.
Fixed bug# 6314 - Upgrade 2.4.x -> 3.0.x - older tickets in database are marked as unread.

otrs-xx/otrs,otrs-xx/otrs,otrs-xx/otrs,otrs-xx/otrs