Payroll Summary/Register - Payroll Activity/History mistmatch

Can someone please advise how I correct the figures on two of my reports which are not matching. 

My Payroll Summary, Payroll Register and STP EOFY figures all align and are correct, which is great as these are the figures the ATO have.

However after multiple reversals and attempts to correct an incorrect payrun back in early April, the Payroll History and Payroll Summary reports are incorrect and overstated. This seems to have occurred with two of the four employees. 

I'm reluctant to do any further reversals as I'm worried about throwing out the figures on the reports that matter. Has anyone had this happen and how do I fix these two reports without it affecting the reports that are now finally aligned and correct.