Edit History

I have moved it to the top of the function and it's still not working, this is PS 1.7.7.8

protected function attributeImportOne($info, $default_language, &$groups, &$attributes, $regenerate, $shop_is_feature_active, $validateOnly = false)
    {
        AdminImportController::setDefaultValues($info);
//start edit
             $suffix = array('','a','b');

            foreach ($suffix as $suff){
            	if (file_exists(_PS_TMP_IMG_DIR_.$info['product_reference'].$suff.'.jpg')){
		        $info['image_url'] = _PS_TMP_IMG_DIR_.$info['product_reference'].$suff.'.jpg'; 
                    }
                }
        // end edit

It was just after the $id_image = []; line