It's a bit convoluted, but I moved a Centos 6.9 VM from Oracle VirtualBox to workstation Pro 15.1 using the OVA format.
It worked (yay!), and the new VM booted without any problems
I remove the VirtualBox Tools
I installed the Linux VMWare tools
I recreated the network adapter and re-added it.
I made sure the MAC address of eth0 in /etc/sysconfig/network-scrtips/ifcfg-eth0 matches the settings of the VM
Initiating /etc/init.d/network restart does the following in the attached image