Duplicate songs

[wb6bna]

I recently re-installed all the songs that were in the buildsongdblog.txt and upon building the database I still come up with same songs shown as duplicates. What I did was to use the local database to list the songs on that disc, then changed the disc id by adding an "N" at the end `of the original disc id and created a new book, then imported them again. My book id is now there but the songs still show as duplicates. Can anyone tell me what I am doing wrong please.. Thank you very much.. Alan