With the current restriction in WHD of not being able to open WHD in multiple browser windows / tabs (without causing issues such as tech notes disappearing when saving), it can be a time-consuming and frustrating process to copy notes, etc. from one ticket to another. This often happens when a ticket is submitted, and spawns a separate issue / project (sometimes multiples). Often, there are already notes in the original ticket before it is realized that there should be a separate ticket. Rather than either printing the existing ticket and manually re-typing all the details into a new ticket, or going in and out of two separate tickets in the same window to copy notes between tickets, it would be a big time saver to be able copy an existing ticket to a new ticket. The new ticket could then simply be edited as needed to retain the relevant details.
I am sure others will be able to come up with additional scenarios that would justify this feature.