//src/libraries/logic/IsolateLogic.sol

  function executeIsolateAuction(InputTypes.ExecuteIsolateAuctionParams memory params) internal {
...
      // transfer last bid amount to previous bidder from escrow
      if ((vars.oldLastBidder != address(0)) && (vars.oldBidAmount > 0)) {
        VaultLogic.erc20TransferOutBidAmount(debtAssetData, vars.oldLastBidder, vars.oldBidAmount);
      }
...
//src/libraries/logic/IsolateLogic.sol

  function executeIsolateLiquidate(InputTypes.ExecuteIsolateLiquidateParams memory params) internal {
...
      // transfer remain amount to borrower
      if (vars.remainBidAmounts[vars.nidx] > 0) {
        VaultLogic.erc20TransferOutBidAmount(debtAssetData, tokenData.owner, vars.remainBidAmounts[vars.nidx]);
      }
...
