L1 to H1 status change

[arya]

I am currently working for MNC company A and transferred to company B in US on L1. I also have approved H1 petition not stamped. If I change my job, will my existing H1 petition will be useful or do I need get a new H1 petition filed for the new job.

[sk4ih]

If you change employer, your new employer should take care of H1 transfer.

[wish756]

After your H1 was approved, are you allowed to continue to work with the L1 in the previous company?

Also, was the H1 filed and approved after you entered the US on the L1?

Any info is greatly appreciated.