changeHistoryManager.getAllChangeItems does not work properly for the cascading fields

[Parisa Kabiri]

Use following code to get list of ChangeHistoryItem on a 'Cascading Field' named Category:
List<ChangeHistoryItem> historyChanges =

ChangeHistoryManager changeHistoryManager = ComponentAccessor.getChangeHistoryManager()
List<ChangeHistoryItem> historyChanges = changeHistoryManager.getAllChangeItems(getEvent().getIssue()).findAll {
 it.getField().equalsIgnoreCase("Category") && it.getChangeGroupId() == getEvent().getChangeLog()["id"]
}

Then if we call 

historyChanges*.getTos() always is empty.

and historyChanges*.getTo() or getToValues() always is null.

[Danyal Iqbal]

+1 for bug.