TDBADVGrid Contract

I have been using your example ADV11 that works with String Grid.
I am using TDBADVGrid polulated from a ClientDataSet. I want it to work like your example. When you select AUDI it all collapses to a single Audi Line.
I have Nodes that are in place. 

When I click on a node to collapse the Nodes the only thing that collapses is the indicator none of the the rows contract.

I have perused this forum for days trying to figure out what I am doing wrong



Can someone help me resolve this

Thank You

Topic: TDBADVGrid Contract If I use the Cars.csv everything works as it should. I am really confused about this it should work as advertised but it does not.

OK so I converted the Data to a CSV instead of a Client Data Set and now everything works as it should. 

So now the questions is WHY???

Anybody....