Let's say the PC bonded license includes Calypso CNC & STEP.  

Here's what to quote to switch it to Dongle:

000000-1978-431    For your XXXXXX S/N XXXXXXXX
000000-1483-375    Dongle; Crypto,USB,Programmed at standard price ($250)
660021-0708-000    CALYPSO CNC DG SMA Rel, 100% discount (this is an SMA release number from the SMA Release tab in the Aftermarket part numbers spreadsheet.
660021-0708-102    CALYPSO STEP IN/OUT DG SMA Rel, 100% discount 

In the Task to Customer Care, Description should be CC DONGLE.