We have a license server in place with 2 floating licenses and a serial number already installed.  We contacted our reseller to purchase a third floating license. 

They sent us a new serial number.  How does this work?  It does not appear that I can "add" the new license. 

If I reactivate the server with the new serial, will I orphan all the existing installations of Solidworks? 

Will I have to reinstall Solidworks on all the computers?

Thank you in advance for any insights you may bring.