The events surrounding the departure of 16 lawyers from insurance boutique Nelson Levine de Luca & Hamilton, explained Monday to be part of Nelson Levine’s interest in de-emphasizing its subrogation business, were further clarified in a complaint the surviving members of the firm filed against the departing lawyers and their new firm de Luca Levine.

As part of an announcement Monday of an overall firm restructuring that included name partners Daniel J. de Luca and Kenneth T. Levine leaving the firm along with 14 other lawyers and 12 staff members, the litigation boutique renamed itself Nelson Brown Hamilton & Krekstein, and will do business as Nelson Brown & Co. Seven of the subrogation lawyers who left the firm, including Levine and de Luca, created the law firm de Luca Levine.