Sorry I tried to think of a good subject :)
I have the query below and it works fine
SELECT Format(DateAdd("d",[AwareDate],30),"yyyy/mm") AS AwareDatePlus30, Sum(IIf(DateDiff("d",DateAdd("d",[AwareDate],30),[DateClosed])<=0,0,1)) AS [AwareDateOpen>30Count]
FROM qryCQA
GROUP BY...