The First Circuit has determined that a motion to recalendar at the Board of Immigration Appeals (BIA) places the case in the same position it was in at the time of administrative closure. That is, if the case was already fully briefed, the BIA need only issue a final decision in the matter after recalendaring. Absent an explicit request for remand, the BIA is not required to consider any changed circumstances that may have occurred while the case was administratively closed.
The full text of Arevalo v. Barr can be found here:
http://media.ca1.uscourts.gov/pdf.opinions/18-1834P-01A.pdf