VLan tagging issues

Hi guys I am using VSphere Essential plus, I set up a Vlan 1955 for VLan tagging for the Front End.  I created Vlan 1955 on my cisco SG300 and tagged all the ports

The issue I am having is if I try to change the VM Network to the 1955 Vlan I loose all connectivity to those virtuals same thing if i try to move a virtual on to the Front End.

Any ideas?

Thank you