We are importing ticket data from our old system, which already have numeric references.

Can we use an alphanumeric reference for imported ticket data e.g. X-1, X-2, X-3, etc. alongside auto-assigned references for new tickets created directly in ManageEngine?

If not and we import ticket data using the old numeric references e.g. 52351, will ManageEngine just add 1 to the highest number to generate the next new ticket?