Varying graph levels

[Gordon Palmer]

On Macbook
I was running some subwoofer sweeps ready for a MSO calculation.
I'd done 20 and stopped to do something else.
Coming back the Audio Midi setup on the Mac had lost the connection to my AVR (Arcam)
I reconnected it.
I didn't change any settings in my AVR, MiniDsp or REW and "check levels" sounded about the same as before.
When I ran more sweeps they sounded about the same level as previously but REW graphed them 20db below where they had been previously.
If I change the Measurement level from -30 to -10 it clips when checking levels.
I need the final few sweeps to be the same measurement as all my others for MSO (obviously)
Have I missed a setting change that REW has done to scaling between sweep sessions?

 

[John Mulcahy]

If the connection was lost because your mac went to sleep the REW audio device data may no longer have been valid and/or may have reset to default devices.

 

[Gordon Palmer]

If the connection was lost because your mac went to sleep the REW audio device data may no longer have been valid and/or may have reset to default devices.

Ok thanks