sort traits

Although I doubt many people will run into this issue, it is very important to me. I created a worldbuilding card called a timeline to help keep track of dates and times within the story. I created it for a story that spans the years 1819-1916, one persons lifetime. Each trait was a year. In the case of 1886, a very pivotal year, I might break the trait down into months. The problem I had was when I added a new trait such as 1876, it got added at the end after 1916 and there is no way to move it to its appropriate place in the timeline order. Please give us a way to rearrange the order of traits after they are created.