I'm wondering if anyone else has had this issue and what they've done to resolve it. Many of our clients are IT service providers who use ticketing systems of their own. Often, we email their ticketing systems from our Zoho Desk instance and have noticed that other ticketing systems will often strip the [##<ticketID>##] field from our subject line and then their ticketing system auto responds saying they've opened a ticket for us on their side. Any further communications to and from them don't get added to the original ticket, and will often open new tickets on our side, of which we have to then merge into the original ticket.

Has anyone found a way to overcome this Ticket-ception? What are you doing that works for you?