Contracting_guy777

I have a question regarding Independent Government Estimates. The USACE Acquisition Instruction states that Independent Government estimates must be made prior to receipt of Contractor proposals, and without considering contractor proposals in the IGE development. Can an agency adjust the Government estimate after receipt of proposals, and after those proposals are shared with the IGE developers in order to be closer to the Government estimate, and a KO use that revised estimate to be in compliance with the statutory 15% on military construction projects?