Your best bet may be to install the Solarwinds License Manager on both PC's, then use it to migrate the licenses from one to the other.
You can search Thwack for "how to move a license", too.
When you can't find what you need by searching Thwack, search the Solarwinds Customer Portal. If it's still eluding you, call Solarwinds Support for assistance. They can turn a long and frustrating search into a short and satisfying experience.