Family Farmer Bankruptcy Clarification Act of 2017 This bill amends the federal bankruptcy code to include an unsecured claim by a governmental unit (e.g., a tax claim by the Internal Revenue Service) resulting from the sale, transfer, exchange, or disposition of farming property in chapter 12 bankruptcy (family farmer or fisherman reorganization) proceedings. Such a claim that arises before a debtor's discharge, regardless of whether the claim is pre-petition or post-petition, must be treated as a pre-petition claim, is not entitled to priority status, must be provided for under the bankruptcy plan, and is dischargeable.