easier way to migrate linux and also machines that cannot see move via networking on a different vl

While the Linux VM is powered off copy the virtual disk into Nutanix images. Most likely format is VMDK and then just make a new VM from that disk image and match the specs, power it on, set an IP needed since it will be a new adapter. If a physical Linux server you can use a P2V tool like VMware converter to create the VMDK.