I have thee copies of a specific route {plus others} and they appear in the ribbon display at the bottom of the page. I have also set the sort specification to Latest Modified. In this case I have just finished working on one of the copies. Normally the Last Modified route displays on the far left of the ribbon. However, now an older copy of the route displays there and is selected as the Latest Modified, also indicated by the very faint bright band around the element. The dates show that indeed the leftmost item is older than the one to the right. I have reset the PC but the result is the same. Not a disaster, but the this is a setting for some wasted time.