UPDATE: 3/26/13, 10:30 a.m. EDT. Two other DLA Piper energy partners—Jeremy Kennedy and Carlos Sole—have left the firm’s Houston office to join Baker Botts in Houston.

A little more than a year after five energy partners defected from Hogan Lovells in a high-profile lateral move to DLA Piper, four of those partners, including energy practice cohead Kevin Lipson, are returning to their former firm.