CSV import with new (multivalued) field failed

[karenmajewicz]

What I did:

1. Added a new field to the Elements and Form elements for "Display Note."
2. Manually added 2 Display Note values to this record: https://geomgdev.lib.umn.edu/documents/999-0011/edit
3. Exported 5 records to CSV, including 999-0011 - the Display Note field exported correctly
4. Added the exact same values for Display Note to the other 4 records in the CSV
5. Reuploaded the CSV - The import form recognized the mapping of Display Note

Upon upload, I see this error:

Interestingly, when I click on the errors [Error - #<TypeError: wrong element type Hash at 0 (expected array)>](https://geomgdev.lib.umn.edu/imports/822/import_documents/934142), it displays the JSON document with the addition of gbl_displayNote_sm

However, the new values do not get committed to Solr and do note show up in the form.