The approval of the I-829 petition is significant, as the goal is to seek approval from the USCIS so that you and your family members, if applicable, will be able to obtain unconditional permanent residency. The documentation to be prepared and used in support of the I-829 Petition needs to be reviewed and analyzed for filing by an experienced EB-5 immigration attorney. The most appropriate way to proceed is to seek the services of an EB-5 immigration attorney to advise you on such matters as material change especially in light of the new EB-5 policy memorandum which was issued in May, 2013.