The rekordbox doesn't write camelot keys when analysing the tracks - it only writes the musical notation.
If you want all the tracks in the camelot, sort the tracks using the key column, select all the tracks having the same key and mass rewrite the key for all of them to the camelot.
Sounds complicated but its about 12 keys and such change takes about 5 minutes :-)
Alternatively you can use a software like MiK which writes camelot and to the analysis there and uncheck the key analysis in Rekordbox so its not overwritten...
any help would be appreciated
