H1B - RFE - Client change

I have filed H1B for client A and now am working for client B and they have raised RFE asking SOW’s and end client letter. Since I am no longer working for client A…how should I submit the documents?

Please help. Response due date is nearing.

You should check with immigration team in your company. They should be able to help you in this case.

This is a tricky situation as you cannot change clients while the petition is pending.

Maybe submit a letter from a senior executive explaining the case and vouching for you. If you work for a big reputable employer then the letter may do the trick.