Hello Farrah,
Sometimes the track analysis of Rekordbox is different than that of other programs. Serato and Traktor suffer from this as well.
Even the best software, Mixed in Key doesn't have a 100% accuracy.
There are a few options.
1 if the file already has a key filled in before importing into Rekordbox, go to preferences in Rekordbox and under analysis untick Key in Track analysis setting. It will not analyze the key.
2 Manually alter the key from track info.