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Nested lists not working as intended

My goal is to have a scrollable list of TargetGroups. I was wanting to nest the TargetGroups within a MarkupList but I can't seem to pass the focus to the TargetGroup. It seem that the MarkupList always has focus even if I call setFocus(true) on the TargetGroup within the focused item in the MarkupList. The TargetGroups are also not rendering correctly. They are not populating with data that is in the componentItem data. 

I really like the way you can create views with the TargetGroup and this fits perfectly with what I am working on. I am using MarkupList because each row is going to have a different height.
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