Withdraw notice send for Amendment can we travel on Old Approved petatio

My wife is in India and had filled premium amendment with new client B,however the application got into RFE. Because of fast timelines this new position for this B client is gone. However client A has open position where she can travel and she has approved and valid petation and stamping for client A.

We have send withdraw notice for Amendment to client B which is in RFE status but there is no update from USCIS yet.

Can she travel for Position A from India or do we need to wait for some confirmation from USCIS for withdraw of amendment.