[amo] Live forgetting Original BPM of recorded Midi clips

[logman]

1. record one MIDI clip with tempo set at 110BPM.
- Orig. BPM will display as 120BPM
2. Change tempo to 130BPM. Record another Midi Clip
- Orig. BPM will display as 130BPM

3. Change tempo to 60BPM. Record another Midi clip
- adjust Orig. BPM to 80

4. Save Set.
- all clips still show correct BPMs

5. Close Live and then open the Set. all MIDI clips will display as Orig. BPM 120

This happens in 8.0.4 as well as the betas I've tried

XP Pro SP3. Ableton 8.04/8.0.5b7