Posting Report vs Income by Payment Method Report

Hello Everyone

Has anyone else noticed; if you are posting the total sales for a specific date the # of transactions vary from the Posting Report and the Income by Payment Method Report. 

The true transaction total is stated in the Posting Report, and the transaction total in the Income by Payment Method Report is overstated ..... consistently......

Is the a difference on how these 2 reports count transaction totals....and if so .... why does the Income by Payment Method Report .... count the transactions incorrectly....

Looking for some feedback from other Finance Users....

Demitrios