The Monthly Activity - By Status is looking at the status history entries for all entering years for that date. The Entering Year drop-down simply adjusts which months are available to select. So while filtering on the 18-19 Entering Year, we could potentially be seeing candidates who inquired for 17-18 (i.e. late applicants back in January) or 19-20 (early applicants for next year) within the month/year specified in the filters. This report is great for wanting to get overall admissions numbers regardless of Entering Year (i.e. How many candidates have we had inquire in the 18-19 year instead of how many candidates have we had inquire about the 18-19 year)