Thanks victor, john and nick.. Pity isnt it? such an efficient application neglect this type of features which the editors some times hungry for it as im now. Im bit not comfortable nesting practice. Reason is many changes i expect from the client as the live edit they did filled with mistakes. My option as follows. I did select all on the time line, choose all track forward tool, press command to deselect from the forward where i click so the clips backward selected and im able to move on. Thanks anyways for your help.