Vt. Stat. Ann. tit. 11, § 3492

In a derivative action, the plaintiff must be a partner at the time of bringing the action and must have been a partner at the time of the transaction of which he or she complains or his or her status as a partner must have devolved upon him or her by operation of law or pursuant to the terms of the partnership agreement from a person who was a partner at the time of the transaction.