OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has removed from under review with developing implications, upgraded the Long-Term Issuer Credit Rating (Long-Term ICR) to “a+” from “a”, and affirmed the Financial Strength Rating of A (Excellent) of Liberty Life Assurance Company of Boston (LLAC) (Dover, NH). The outlook assigned to these Credit Ratings (ratings) is stable. The upgrade of the Long-Term ICR follows the completion of LLAC’s acquisition by The Lincoln National Life Insurance Company, the