Vmware vsphere 6.7  ESXI 6.5

I just with the help of you guys setup my first Dswitch.

I migrated all VMs and host to the new Dswitch I called Management and the Port named Primary

Now when I look at my Hosts I see a Distributed Switch listed

The old Virtual Switches are still there and show no network adapters assigned.

But I am unable to remove the virtual switches

When I go to my DataCenter and select Networks I see the old networks listed   VM Network and VM Network HA

They both show all the Hosts still listed and the VM Network shows 3 of my 7 VM’s listed,

Even tho I migrated all them to the DSwitch

Any ideas on how I can remove the virtual switches?  My thoughts are I can not remove them until I get all the hosts and VM off   but how do I do that

They all show on the Distributed Switch and Port

Thank yoy

Tom