I'm not able to reproduce this bug here.
Is it happening with any preset of the CS80 inside AnalogLab ?
Are you able to reproduce this each time ?
If so please tell me exact steps to reproduce.
Thank you for taking time to report
As I said it happens not just with CS80 but any of the Arturia synths in V Collection 4 and the preset doesn't matter - happens with every one across the synth line.
To reproduce is easy (I work in Pro Tools 11.3.1 mainly):
Create an Instrument track and put AL on an insert.
Click on any synth in AL and any patch.
Create some MIDI notes on the PT Instrument track.
Hit play and listen.
Delete AL and insert the synth you used in AL and call up the same preset you used in that synth in AL.
Now hit play and listen and everything will be lower by 1 octave.
This also happens in standalone mode as well so it's not any interaction with ProTools.
System: mid 2011 27 inch iMac running both OSX 10.8.5 and OSX 10.9.5 with 32 gig ram. Happens in both OSX boot partitions.