Is there a way to curate a project with a restricted date range? I know you can curate time breakdowns, but is there a way to lock all the project data so that data outside of a certain date range cannot be pulled in?

I have a dashboard that I would like to do a TY/LY comparison with, and I would like the start date for both ranges to be fixed (3/6/15-rolling date and 3/4/16-rolling date). However, I seem to only get the option to choose fixed or rolling for my first set of dates (LY in this case, see screenshot ...