We have two Projects, and have sometimes moved issues from one to the other. From that experience, I know that the Jira Issue Key updates when the issue is migrated (for example, DEV-1000 changes to TST-2000), but those numbers remained linked in some way; you could still search using the old Issue Key DEV-1000, and Jira will bring up TST-2000.
But we are planning on archiving one of the Projects, and we're moving its issues to the other Project. Will we still be able to search using the old "DEV" Issue Keys, even when that Project has been archived, in the "TST" Project, for issues moved before and during this migration?