The administrative record for the purpose of judicial review properly includes documentary evidence from the post-filing review process, where both parties consent to the addition of the record in the post-filing process.
ERISA appeals at summary judgment are governed by clear error; remand to allow the court to interpret the documents.
http://media.ca1.uscourts.gov/pdf.opinions/17-2078P-01A.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.