I have been experimenting with importing external event data as evidence. Each time it is collected there is a date field for the Collection Time. I can successfully create a web dashboard panel to display the current (most recent) data.
However, the next time it runs, the previous data seems to disappear. When I view the Schema Data of the External Evidence Data System it only shows the new data, and creating a trend panel (with Collection Time as the x-axis) only has one data point.
I have used SQL Management Studio to explore the reporting database and found the evidence data, and both the new and old data is there, so does anyone know why I can't see the previous data in the Console or the Web dashboard? How else can one create trend data?