The FAQ says:
Can I sell licenses? If so, how?
Yes, you will still be able to sell your retail licenses using the Steinberg Licensing system. We will provide details of this process in the future.
Note, however, after you have updated an existing license for a Steinberg product to a version that uses the new Steinberg Licensing system, although the license for the previous version will remain in your eLicenser, you cannot resell, transfer or update/upgrade that license.
Question: Can I please clarify that this means I can still sell the v12 license but just not the v11 license that remains on the e-Licenser USB?