Example VersionError Fix

gistfile1.js

function saveRecord(record, args, cb) {
  record.save(function(e) {

    if (e && e.message == "VersionError: No matching document found.") {
      recordModel.findById(record._id, function(e, newRecord) {
        if(e) return cb(e);
        reSaveRecord(record, newRecord, cb);
      });
    }

  });
}

function reSaveRecord(oldRecord, newRecord, cb) {
  var changedFields = oldRecord.modifiedPaths();

  changedFields.forEach(function(field) {
    newRecord[field] = oldRecord[field];
  });

  newRecord.save(cb);
}