When migrating a LUN using Clariions virtual LUN migration the following applys :
If migrating a LUN to a destination LUN of the same size, Source LUNs for Snaps are Clones can be migrated without issue.
However if migrating to a larger destination LUN, any Snapview sessions must be destroyed, Clone groups must be destroyed and re-configured after the migration.
Also, its worth noting, that snapview reserve LUNs or Clone private LUNs cannot be migrated.
More info on the attached EMC document.