If you're using JIRA Cloud importing a single project option is not available, so you'll have to take a more complex approach:
This is just an outline of how to do it, note that there are a lot more things to consider when importing the project.
Hello, Community! My name is Gosia and I'm a Product Manager on Jira Server and Data Center here at Atlassian. Since 2002 when we launched our public issue tracker, jira.atlass...
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