Symptoms:

   Cannot Commit a Failover after VM migration to Azure - getting error: Failed: Failed to get reflection data for VM

During the Failover live before the VM was committed - the IP was changes to this VM (DHCP to static)
after that seems to be an issue getting reflection data for that newly created VM on the Azure side.    

Cause:

   During the Failover live before the VM was committed -  the IP was changes to this VM (DHCP to static)
The expected is first to commit before changing those kind of VM settings. (network and disks).    

Solution:

In an attempt to prevent a rollback to the fail-over and run another one again, we revered all VM changes back to the original to be identical as it was during the VPG replication (same IP, Subnets, and Security groups). As well as validate that no disk size changes are done.

Once revert was completed the commit worked as expected.