Does the ISRC code get deleted when you modify a track?

Before releasing a track to radio I decided to change the tempo. After releasing it I’ve had issues tracking the song and I’m wondering if I screwed up the ISRC code when I modified the tempo.


Audacity does not support ISRC tags. Use a program like MP3Tag to (re)add the ISRC tag (I’m not very familiar with Mac software, but I expect Google can help to find a suitable tagging application)