Custom field not working in search
I would recommend changing the certification field into a multi-select. That way the search field will be a drop down and much easier for the end user. I had to do this recently. Here are the steps I took:


Create a new multi select custom field.
Make sure the values match the entries from the previous field to avoid errors in the next step.
Export the records with the current custom field. Make sure to include the contact ID
Now do a import updating the new custom field with the data from the old one.


These are the steps I took recently. Looks like you only have about 100 records in this group so it should work fine.