Database retaining old data during new import

[TaiChi56]

I have a student database that I used last year to track student tardies. I went in and deleted all records. I then took a new registration file and imported into the database. I also brought all their pictures back in. When I imported the students information the old data showed back up. So for instance John Boy moved from 11th grade to 12th grade. All that data is fine. But it carries his 11th grade tardies with him. I checked the portal setup and I have "Allow Portal records to be deleted." So how can I get rid of the old data permanently so we can start new? Thank you.

[TaiChi56]

I solved it. I deleted the table and started a new one.