Hi,
On Jira Server Version during the Bulk Edit operation "Add to Existing option" is available only for System Fields like Components/Labels. Is there any option to achieve the same behavior for Custom Fields ??
Right now for custom fields, during the Bulk Edit operation, If we provide any new values, it will always overwrites existing values on the issues and replaces the old values with new values. There is no option to append the values by keeping the old values intact.