Can I remove an unmapped volume from Consistency Group in XtremIO?

Background- I have a consistency group having 11 volumes out of which 4 are unmapped right now. There are multiple snapshot sets out of this CG. Now, when I'm trying to remove these 4 volumes from CG, I have a message- 'Removing volumes from CG will cause loss in cross consistency of further snapshots. Can I remove the volumes from CG without impacting current snapshot sets out of the CG?