My sister and brother-in law have filed I-131 re-entry permit on 10/8/2020 which was received in USCIS office on 10/26/2020. They have tickets to go back India in 2 weeks. Getting bio-metrics appointment does not sound like will happen until 12/2020. If they leave for India now in Nov 2020 and once I receive their bio-metrics appointment, can I reschedule it 10-11 months far in Oct -Nov 2021 for them. In that way I will not lose application fees. Cause if I withdraw the application I will lose the money. It is not refundable.