Once you have imported and mapped employees you will want to keep their information up-to-date.
The HR platform is seen as the master record so employee data that's changed there will be reflected in payroll, but not the other way around.
From the main "Employees" tab click the HR button at the top of the page.
If there are any employees that haven't yet been mapped, imported or ignored then you'll be shown these first.
If necessary switch to the 'Mapped' tab.
The Re-sync All button will allow you to re-sync all mapped employees.
Any changes in the HR system will be reflected in the payroll.
Click an employee in the list of mapped employees. Click the Re-sync button to copy changes from HR to payroll
Next to the 'Re Sync' button is a link to the Sync Log for the employee. This shows a log of any changes made to the employee as a result of information picked up from the HR platform.