Audio is not exporting the edited version

Hello! I am new to Audacity, but have used it several times (very simply) with success before. Today I am editing songs and when I export the edited version, it exports correctly onto my desired destination. Then when I upload that file onto my Amazon music, it says it has uploaded the correct file, but the song is no different than the original version. And when I play it in iTunes, it is also not the correct version. Any help would be appreciated.

Try exporting with a different name from the original file.
Two good reasons to do this: 1) It is less likely to confuse ‘smart’ music libraries, 2) If you make an error in Audacity, you don’t destroy the original.