The recent restructurings of Argentina and Ecuador presented the first opportunities for the ICMA CACs to be tested in practice, but the “re-designation” and “PAC-man” strategies first seen in the Argentine restructuring revealed shortcomings in the ICMA contractual architecture. Argentina’s and Ecuador’s creditors responded by negotiating tailored refinements to the standard CACs that would mitigate the risk that a sovereign could compel a restructuring that is not supported by the requisite creditor supermajorities. The qualified restrictions on “re-designation” and “PAC-man” adopted by Ecuador and Argentina enhance the ICMA architecture and provide strong incentives for a sovereign to engage constructively with its private creditors in a consensus-building process that results in a restructuring proposal capable of achieving supermajority support.