If I Purchase MMWA Wetland Mitigation Bank Credits and Don’t Use Them, Can I Resell Them to Someone Else? michiganwetlands@michigancreative June 12, 2017agricultural producers, agricultural producers with swampbuster violations, landowners with expiring crp contracts, local governments No. Due to the limited number of credits available, any unused credits must be sold back to the MMWA and cannot be sold by you to third parties.