1. Open the import file and correct the headers for the Constituent Attribute columns as follows:

Raiser's Edge field (Header):
Constituent Information Attribute, Attribute Import ID  (CAttrImpID)
Constituent Information Attribute, Category                  (CAttrCat)
Constituent Information Attribute, Description              (CAttrDesc)
Constituent Information Attribute, Date                          (CAttrDate)
Constituent Information Attribute, Comments              (CAttrCom)

2. Save and close the changes to the import file
3. Open the Import parameters in Administration, Import
4. Select the Fields tab and click Update fields
5. Click Validate Now