Go to layout mode. Double click the field where this data is appearing. Check the field name and table occurrence name specified for that field. Do the same check on your field that is formatted with the check box format. I predict that these are two copies of the same field.
The name of the field the data was appearing predates the new field by 6 years. The new field has a totally different name - I checked the fields to see if I had somehow linked them up. But since the new field was new - I deleted it, re-invented it, and it is working perfectly now. I will just file that under Qwerks.
Thanks for trying to help though.