Rotate All By Piece Orientation
You can use the Rotate All by Piece Orientation option, when you want to rotate all the pieces according to the piece's original orientation.
Icon & Location
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                                            Toolbar: Group Tools 
To use the Rotate All by Piece Orientation tool:
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                                            Open the Marker file. 
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                                            Select all the pieces, then open the Piece Properties dialog (go to Piece> Info).so you can see the piece orientation.  
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                                            From the Group toolbar, click on the  button. button.
 Notice now that all the pieces are rotated to the same orientation: