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I want to export project from one jira instance to other and looking for native JIRA options for exporting and importing projects.
I don't want to use any external add-ons
There is no "project export", you have to export the whole system.
Once you have a full export, you can import issues from a project, but you have to manually set up the project in the target system to match all the incoming issue data.
There's a good reason there are apps to do this sort of migration...
Which apps can serve this purpose?