How to update the DFF of data type Number in Functional area catalogs using Import CSV

Summary:

We have an requirement to update the DFF of data type Number with table column name 'Attribute_Number1' at 4000+ categories in Functional Area Catalogs using Import and Export CSV options in the FSM task 'Manage Functional Area Catalogs' But it seems the Import CSV file don't have Attribute_number1 Column we have all other columns like Attribute1,2,3,.. and Segment1,Segment2,, and SegmentNumber1, SegmentNumber2... In order to test where the DFF of Attribute_number1 will get updated in csv file I tried to export the CSV file after manually updating in one of the category and exported the csv to check the data, it