Migrating 2.4 database to phplist 3.3

I can’t get HostGator to provide phplist 3.3 from their s/w install, so I’m trying to install it myself directly.
Installation directions of course say to create database, but is it possible to simply migrate my existing database?
Or just use the existing DB?
Better yet: is there an interactive upgrade option for phplist that takes this into account?