The valuation in a divorce case of a lawyer’s partnership interest in his firm should not be revised to account for a practice-altering change in the law or the departure from the firm of a major client, a Long Island, N.Y., judge has ruled.

The partnership interest of the lawyer, whose name was redacted from the decision but who was identified elsewhere in court records as Allan B. Mendelsohn of Zavatsky, Mendelsohn, Gross, Savino & Levy, had been valued by a court-appointed expert at $195,000, as of Dec. 31, 2002, and $273,000 as of Dec. 31, 2003.