display current MP3 Tag in iTunes

Hi All,
When I change something in an MP3 tag eg correct a misspelling, using The Tagger from deadbeat Software, the changes are not reflected in iTunes.
iTunes still shows the info which was in the tag at the time the MP3 was imported.

How can I get iTunes to display the current tag info?

Thanks

Retag it manually in iTunes. I have found no automated program that works. Retagging is easy anyway.