(a) Any petitioner who has not submitted a complete documented petition as of July 31, 2015 must proceed under these revised regulations. We will notify these petitioners and provide them with a copy of the revised regulations by July 31, 2015.

(b) By August 31, 2015, OFA will notify each petitioner that has submitted complete documented petitions but has not yet received a final agency decision that it must proceed under these revised regulations unless it chooses by September 29, 2015 to complete the petitioning process under the previous version of the acknowledgment regulations as published in 25 CFR part 83, revised as of April 1, 1994.

(c) Any petitioner who has submitted a documented petition under the previous version of the acknowledgment regulations and chooses to proceed under these revised regulations does not need to submit a new documented petition, but may supplement its petition.