It seems that something happens on route changes as well. At 24 hours the software drives a stake in the ground and takes the first data point of the new day and displays that for all the previous data points. Likewise when there is a route change. the virst valid data point is filled to the left on all the previous data points. Scrolling back in time past these points seems to display the old data suddenly as the duplicated data point is scrolled off to the right. It works I guess, but seems buggy.
