osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now
Original thread: http://osticket.com/forum/discussion/89699/osticket-v1-10-merge-duplicate-ticket-mods-attached/p1
Since this mod was released we've been using it as a core modification but in order to make the changes maybe stay in future releases i decided to try and port it to a plugin and here's a start of it.
You can merge and split tickets, both single and mass.
Bring the recipients from the child tickets.
I've not ported the thread merging or redirection yet.
Note: This plugin adds a table %prefix%_ticket_relation and it also alters the conditions thread event table, this in order to add the events to tickets.
When uninstalling the changes will be removed, so any relations between tickets will be removed but tickets will remain in their current state.
Any events that were merged/split will lose their text even after reinstalling the plugin.