Description: This solution describes how to remove constituent attributes during an import
First you will have the attribute description you wish to remove in your data file. Map that attribute as you normally would if you were importing. You will also have a column in your data file populated with the value to Remove next to the attribute you wish to delete. The value in your data file for the remove attribute column must be set to "Yes", "Y", "T", "True" or "1".
Example of what will appear in the data file:
Column G: "Attribute Description"
Column H: "Yes"
For versions 188.8.131.52 and Earlier:
Note: Attribute description, comment, and date can be removed from Constituents, Individual Relationships, Organization Relationships, Participants, Memberships, Actions, Proposals, Jobs, Education Relationships, and Financial Relationships. Gifts are not updated, so gift attributes are not updated.