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After that you will need to edit the toolset and enable the buttons:http://screencast.com/t/BodYObOmVUA5
"Accept Track Change"
"Reject Track Change"
"Accept All Track Changes"
"Reject All Track Changes"
"Enable Track Changes Override"
I am not aware of any plans to remove this functionality. There is another option to track changes - when comparing revision history version:http://screencast.com/t/atafAPiGl
I think this will be helpful as well.