Issue migration current project to new project in jira cloud instance.

[koteswararao]

best way you would suggest to take the issue export from current instance and then after creating a project in Jira instance

[Shreyance Shaw]

We have been doing quite some migrations within our firm between JIRA instances.

I would recommend a split approach

Use JSON Import to Migrate System Fields (including History)

Use CSV import to migrate custom Fields.

JSON Import would allow you to import history 

CSV import would allow you to change custom field values if required.

[Alexey Matveev]

Hello,

I would suggest to do it by exporting issues to a csv file and then importing this csv file to another instance. But it would require to create manually the project on the destination Cloud and also issue history would not be migrated. But if it is ok with you, it is the easiest way to do it.

To export data go to the Issue Navigator, execute a search (project = yourproject) and use the export button.

Here is how you can import data:

https://confluence.atlassian.com/adminjiracloud/importing-data-from-csv-776636762.html

[shetty]

If it is same Jira Cloud Instance then

Create new project and bulk move all the issues to new project from existing

No need to take export of issues

If You want to migrate from one jira cloud instance to other other Cloud Instance then

Export Issues In Excel CSV Format(all Fields) from existing jira 

Import Issues in new Jira instance through External system Import available in jira settings

Note :- You need to be a jira administrator to perform above actions