Once your file is selected, choose Next: Map Fields to continue through to the next section for review in the upload wizard.

Use the dropdown options below each column header to indicate how the data in that column should be treated.  Boarder PK or Contact ID will typically be the value you'll use to link the data to existing contacts in your system.  If a field should be mapped to a different UDF value in your Reach system than what is listed, you can select it from the drop down list for Map to Field.  If a field should be ignored in the upload and the UDF value should not be updated and be ignored select Do Not Import (Skip) as the Map to Field option.  You will see a preview of how many fields will be mapped and how many will be unmapped (ignored).  When you are ready to review your changes just before import, select Review Your Changes.

If you are ignoring any fields, you will be prompted with an alert that you have a specific number of unmapped fields and if you want to proceed.

As you review your changes, your data will display as a preview and show what data will be written to each field for each contact.  You have the ability to select the Sync Mode which will tell the system if blank cells of data should result in no changes to the current UDF values already in your contacts' details, or if Sync Mode is selected that blank cells of data will result in clearing of current UDF values already in your contacts' details.  Once you are satisfied with your data preview settings, select Finish Import to upload the new UDF values.

Once you finish the import and the system has processed it, your browser will prompt a refresh of your portal.  Once refreshed, you'll be able to see the UDF updates have applied to your student's Contact Details.