You can restore Exchange databases from a backup set created from an LCR-enabled storage group.
Restoring a backup copy from an LCR replica Storage Group
You can use the Restore wizard to restore Exchange databases from a backup set that was created from either an LCR location or in its original location using the Restore wizard.
What to do if corruption occurs in an LCR-enabled Storage Group
When corruption occurs in an LCR enabled Storage Group, see Microsoft Exchange server documentation and use a Microsoft recommended method to recover a Storage Group. If an LCR recovery fails, use a backup set to restore the Storage Group.