Resource Management Advanced reports, when grouping by month, should include Month or Month/Year as a column. I tested both grouping by week and by month (both options for group by), and they produce the exact same output advanced report data even though the report inside of the RM module shows YYYY/MM grouping. The Time & Fees - Hours Report generated by advanced reporting also groups by week instead of month. Output should match what was requested in the RM module or options should not be offered for grouping/filtering.
