When I look at activities from before 2014 I don't see the map or graphics about speed, heart rate and elevation, only the summary data are visible on the web page. However, the data are still there when I look at an exported tcx file. The cutoff date seem to be the beginning of 2014 - everything is there for a run on Jan 4th 2014, but not for a run on Dec 28, 2013.
