SEP in PCI - ports 8014 vs 443

Hi, we have a non-internet enabled payment compliance industry domain where several secure servers are set up for credit card payments.  Recently we upgraded to SEP 12.1.6 RU6 MP5 (12.1.7004.6500), and communication to these 10 servers has been cut off and they are no longer getting any definition updates.  Both ports 443 and 8014 are open on the firewall, but something is preventing communication tot the SEP server in this environment?  When I exported the SYLINK.XML file to a few of the clients, and imported them using the Troubleshooting/Import Communication settings, even though it says it wants to communicate on 8014, it's reverting back to 443.  

Need help with this, please!

Thanks!