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Go the Issue you want to clone → 3-dots menu → Deep Clone
The dialog with the cloning setup will appear →
Make sure to select Clone issue properties under advanced the following options under Advanced options in order to clone a checklist:
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Clone other editable fields (not shown in “Create issue“ screen)
Status colour Green title checked Clone issue properties (usually used by apps)
Status colour Green title checked
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Click Start Clone
When cloning Jira Issues - your checklist data would be cloned along with the custom field 🎉
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