There is duplicate functionality in the Merge Mod / Plugin by @[deleted]01.I've tested the mod, and found it works well. I was a little concerning using the mod would mean I would have troubles later when updates to the OsTicket core came out later, in particular relating to the database change. However, the database change is minor and from memory, I found it could be add/removed without much trouble at all if you know what you are doing with MySQL databases.Here is the URL to the mod: https://github.com/osTicket/osTicket/pull/3768Development has started on changing this mod into a plugin, which should ease the worries about this not causing troubles when trying to upgrade OsTicket.Here is the URL for the plugin: https://github.com/Micke1101/OSTicket-plugin-MergingAnd the forum discussion for it is here: http://forum.osticket.com/d/discussion//plugin-mergingLast I saw, this wasn't completely working yet, however you may want to check it out further to confirm this.Using the API might not be all that difficult either.