Sharing of shopping cart for Multi Store Open cart 2.0

We have an open cart 2.0.1 live ecommerce store. We have create 2nd store in same installation for Open Cart. Now we have 2 domains, [login to view URL] and xyz.com. [login to view URL] points to 1st store of same opencart and xyz points to [login to view URL] to 2nd store of same opencart. We have used use shared session feature of Opencart 2.0 feature but cart sharing is not working. We need some one to fix it and make both store running with cart sharing.