L1B reuse visa

I entered US with L1B visa with company A 2 years ago. Four months ago I moved to a different company B and had to applied for E2 visa. Now I would like to go back to company A to my previous position and I still have L1B visa valid on my passport until 2017 with I-94 stamped with that visa until Sept 2017.

Can I reuse this L1B visa?

many thanks in advance for your answer

You would have received new I-94 when moving to E-2.

Another COS from E-2 to L-1 needs to be applied. Once approved, you can start working on L-1.