KMyMoney has many helpful reports for this month (ie Income and Expenses this month), but most often I just did my reconciliation for the previous month and now I want to see the report. It seems like this is a common report timeframe and so I shouldn't have to manually configure/ enter the date to get this report.
We already had requests for other timeframes and did not add them to keep the default list of reports from bloating. I hope you used the date option 'last month' for your copy of the report. You only have to create the report once as the date filter for this setting is sliding. Also available: last quarter, last year, etc. Hope that helps.