Hi @Bigeasy, djay stores your history in the "“djay Media Library” database. djay also creates automatic backups of this database. If your history is missing, you can restore the “djay Media Library” from one of your backups. Please refer to the bottom section of the linked FAQ article below on how to do this.
I tried that but it didn’t work. I removed the program and reinstalled it to start over, and lost everything. Now when I start a new playlist it goes away in a couple days.