Welcome to the Reckon Community.
That is unusual behaviour.
Please check that there has not been any change in these employees' records regarding payroll generally (eg, shift from fortnightly to weekly pays; calculations per pay or per week) or in accrual rates.
Then resort your lists, rebuild and verify your file.
If the problem persists please call Technical Support for further one to one attention on the issue.
In the new financial year, we also started having similar problems.
3 weeks ago, when we were processing payroll, We noticed that payslips were showing different numbers from employee centre.
I contacted support through email and they sent this link that shows how to delete modified payslips. http://kb.reckon.com.au/issue_view.asp?ID=5131
Now the whole calculation of employees is a miss up and some employees have -600 hours shown on their personal leave.
I tried to do some googling and apparently it is common problem in reckon account.
Please let us know of a solution to fix the problem.