I have just imported some client contacts onto a new list on Zoho Campaigns. As we are a large company and follow stringent GDPR regulations, my concern is that the newly added contacts may have already unsubscribed from a previous list in Zoho Campaigns, therefore will not want to receive any communications. 

Can you confirm if contacts have already unsubscribed from a campaign list, they will automatically be removed or will not be imported on to other lists?

Has anyone else had this issue?