To move printers from one Universal Print Connector to another, you'll need to unregister them from the old connector and then register them with the new one.
Open the Universal Print Connector application on the server with the old connector
Select the printers you like to move.
Click "Unregister" for each printer.
Now open Universal Print Connector application on the server with the new connector
Click "Register new printer".
Select the printers you want to register.
Check Azure Portal or Microsoft 365 Admin Center to ensure the printers are now associated with the new connector.
Remove the old connector.