@baraklevy – the file is not redirection-models-group.php That was the path – Look in your wp-content folder, then in the plugins folder, then in the redirection folder, then in the models folder. In here you will find the file group.php
Navigate to line 70 and make the changes. If you go to the github page (https://gist.github.com/theandystratton/4565222), it shows you the old line 70 and the new line 70 with explanations.
Hope this helps!
