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Label Manager on Jira Cloud supports bulk adding of label options using comma separated syntax.
Option 1:
Copy paste existing labels from the UI in onPrem into CSV
Migrate the Labels into comma separated list
Add comma separated list in bulk in Jira Cloud to the specific field in Label Manager Global Settings
Option 2:
Get the existing labels form onPrem via API
Migrate the Labels into comma separated list
Add comma separated list in bulk in Jira Cloud to the specific field in Label Manager Global Settings
4. Add Project specific configuration if used
If any project is using specific configuration, go into project settings and update the configuration accordingly.
Just like step 3.
5. Export the Issues from OnPrem in CSV
TODO Alles auf einmal? Projekt spezifisch, Custom field spezifisch?
Export issues in onPrem to CSV.
6. Update the fieldvalues field values in csv using provided excel script
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TODO: normal user csv import ODER admin csv import.
TODO: How to map the field values to the existing Jira Issues without creating new ones. (Issue Id will be different in cloud than it was in onPrem.)