sentences:  The ISU voted in 2010 to discontinue the OD, along with the CD, and to introduce the short dance (SD) as a replacement.Accordingly, after the 2009–2010 season, the ice dance competition structure was changed and the original dance was removed from all ISU junior and senior level competitions.The original dance (OD) was added to ice dance competitions in 1967, when it became a replacement for one of the two compulsory dances.