Checkbox Data Transfer

I have one Checkbox with many entries. I’d like to take all the entries and re-categorize them into 5 different fields. My issue is backward compatibility. How do I take existing Checkbox entries and have the same checked choices transferred to 5 different fields? All current Checkbox entries will be present, but disbursed in the 5 new fields. Just broken out into 5 separate lists. How would I do this?