Control > Security > User Import

Use the [_null_] placeholder in Update mode to remove values from the desired fields.

The placeholder is allowed on the following columns:

• Title
• EmailSecondary
• Company
• Telephone
• JobTitle
• PrimaryAddress1
• PrimaryAddress2
• PrimaryTownCity
• PrimaryCountyState
• PrimaryISOCode
• PrimaryCountry
• PrimaryPostCodeZip
• DeliveryAddress1
• DeliveryAddress2
• DeliveryTownCity
• DeliveryCountyState
• DeliveryISOCode
• DeliveryCountry
• DeliveryPostCodeZip
• Website
• TwitterID
• FacebookPage
• LinkedInPage
• BusinessTelephone
• MobileNumber
• FaxNumber
• DateOfBirth
• Gender
• MemberType
• ChildMemberType
• MailingListSubscriptions
• SecurityGroups
• SecurityClearance
• Notes
• Biography
• ExternalAccountID
• AccountCodes
• AccountNames
• CRMTopics
• ContactLists
• Nickname
• Statement
• Skills
• Roles
• ProfileImage (need to delete the Avatar if set to [_null_])
• SubscriptionPlan
• SubscriptionStartDate
• SubscriptionEndDate
• RenewAction