iExpenses - cost center

Hi All,

We are using iExpenses which is in pilot state. We have an issue where by an employee changed to different department and needs to submit expenses for ex-department. Both department have different cost centre. Since he changed in the middle of the month, expense report for a month has expenses covering both departments. He created an expense sheet with cost centre code for current department and overridden cost centre info for some lines which need to be submitted for old department.  Overridden feature doesnt seem to work at all as these lines are reverting back to current cost centre code.