I have a project with 19 audio tracks. 1 is an imported stereo scratch track and 18 are recorded drum mics. I used the scratch track to record drums at 144 bpm. Everything was fine. I wanted to group the drum tracks and time align the drum beats to tighten them up. So I made a “Save As” copy first for backup. Somehow my 18 drum tracks have changed to 134 bpm. Original project tempo was set to Keep at 144. Very frustrating. Even the back up copy has done this. How can the tracks tempo just change. And I cant get it back. Also the scratch track aif file has got off tempo different than the drum tracks. I had to reimport it to get back to original tempo. Also, before the Save As, I had grouped the drum tracks (take tracks) and checked Editing and Quantize-Locked.