public WorkItemMigrator(string sourceProjectName, string targetProjectName)
        {
            _sourceProjectName = sourceProjectName;
            _targetProjectName = targetProjectName;
            _migratedItemsMap = new Dictionary<int, int>();

            _structureHelper = new StructureHelper(sourceProjectName, targetProjectName);
            _logger = new Logger(Config.LogFolder);
            _logger.ClearLogs();
        }