View multiple email threads in Help Desk

Currently, only one email thread can be viewed in the help desk.

After a ticket is merged, there is no way to see or know that there have been multiple email threads. Only the primary thread is visible.

It would be great to have little arrow buttons in the red box area in the attached pictures to be able to switch to different email threads.

Our staff currently has to know that the ticket was merged or there were other threads and then have to click into “tickets” to view the other threads.