Steps to reproduce:
- select a graph where items aren't collecting trends, just history
- click on last 2 days - graph shows data
- change time period to now-3d to now - click apply
- graph no longer shows data.
I've attached screen shots showing that if I pick same day last week or variations of that, the data is indeed in the history database
reading documentation it is indicated that one should see graphs from history data if trends are not being collected.