Hi,
I think /xml setting is conflicted with other properties.
If you exported task definition from Task Scheduler to XML file and attempt to import modified xml file using this action, I recommend to use "Run Command Line" action type instead of "TS - Create/Update Schedule Task".
Sample of Command Line String:
schtasks /Create /S <Hostname> /RU <Running User> /RP <Running Password> /TN <Task Name> /XML <XML file path>
You can use other options of schtasks for your requirements. You can edit some elements like <CalendarTrigger> and <Exec> element in XML file as well.
I think it is simple way to create task in Task Scheduler.
If you need further info of schtasks command, please check Microsoft Developer Network site.
Schtasks.exe (Windows)
Cheers
Yas