So to get the target mapping works its necessary the provisioning rule (because you are provisioning to the target mapping)
so i do two tests to see the difference:
After add the provisioning rule → add lastName target Mapping time tracking lastName
go to updte the identity lastname, i can see the changing in iiq and also in time trakcing user lastname
I remove the target mapping proceed to change the lasname, I see the changing only iiq but no in time tracking