If you are using use the Copy ‘Copy Value From Other Field Field’ post function in the Create ‘Create’ transition and you would like to copy values from a linked issue (Issue Linking: Issue in Transition = Source, Issue Linking: Issue in Transition = Destination, Parent / Sub-Task, Epic / Issue in Epic), the Copy Value From Other Field" post function must be placed after 'Creates the issue originally'. An issue has to be first created, then a relation between these linked tickets issues is established. Only then values will be properly copied from/to linked issue. | 