Not able to customize Ideation module

I have been trying to customize the ideaton module but it is not happening. I made the changes in ideation.features.content.inc file of ideation but the changes didn't get reflected in the drupal setup.(I changed the $fields['idea_group-field_idea_categories']=array(
allowed_values' =>) but the values didn't change. See the attached file).

Then I removed the entire ideation.features.content.inc file still the categories and other fields in the create Idea page appears.

Does anyone knows how to customize it.
Thanks