Are you absolutely sure the two values are the same? Did the import bring in something that might be 'invisible', such as return or space, at the end of the word. That pesky "space-at-end-of-word" will NOT match the value-list item with no space at the end...
Thank you very much for your input. I went back and double-checked again and found an extra space was imported in and caused the unchecked "2-Year Follow-up" radio button. It has been fixed now.
Thank you so much!