NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to one class of notes from LVII Resecuritization Trust 2015-A, a re-REMIC backed by rights to receive “intrinsic” cash flows on 17 underlying mortgage-backed bonds. The underlying bonds are insured by Ambac Assurance Corporation (“Ambac”). The Depositor, LVII Asset Trust 2015-A, will collect all distributions made by the underlying RMBS, comprising both “intrinsic” mortgage principal and interest (P&I) pa