You don’t need to install Dorico 3. Just run the Dorico 3 code through the eLicenser and allow it to update your Dorico 2 license, then repeat for the 3.5 license (and install Dorico 3.5).
You don’t need to install Dorico 3. Just run the Dorico 3 code through the eLicenser and allow it to update your Dorico 2 license, then repeat for the 3.5 license (and install Dorico 3.5).