8.1.7.0.0 Standard Edition for export and import
No error messages - import terminated without warnings

The export/import didn't seem to have any problems, and I don't have any reason to believe that is even related to my problem except it was the only change to the DB before I began having this problem, and only with that one table. The data did load into the table during the import, and I could query it without problems.

When I CTAS and made a new table, I could rename it to the name I wanted for the original. I could find no other problems with the DB.