Trip encumberment

I spoke with Natasha Roth regarding trip reimbursement / encumberment. She stated that I can apply for a trip reimbursement through the Procurement System, and that whenever she does so prior to the trip occuring, she is called by the final approver and told to instead re-do it once the trip is completed. I still will need to fill out an "Application to Attend a Conference" form and have it signed by the Chair. But then afterwards, upon return, I will apply for reimbursement.