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Is this a known bug? (When dragging child workitems in taskboard view links are broken)

One answer

Since no one can answer this question, it apparently is unknown. I would suggest to file a defect with support.
Comments

Thanks for the reply and suggestion!

Where can defects be submitted?

You can use Support to create a PMR or create it here: https://jazz.net/jazz/web/projects/Rational%20Team%20Concert#action=com.ibm.team.workitem.viewWelcome

Thanks Ralph!