The approved time off bookings that were already transferred from Web TimeSheet – Time Off Calendar to Microsoft Outlook can be edited any time by the administrator. However, ensure that the time off booking is re-approved prior to exporting it again to Outlook. 

The same time off booking t?hat is once again exported to Microsoft Outlook, will replace the old time off booking, corresponding appointment; the outdated appointment will continue to exist in Outlook and you will have to delete it manually.