When [Add Code to Project] is used on a PRI or GRI it does not include the virtual method GetReplicationList in the generated listing, nor is it a function that is defined. In looking at the generated code for the ShooterGame it is definitely there, but not in any of the PRI or GRI that I have exported.
I believe GetReplicationList always has to be manually added to a class’s .cpp (the declaration will be generated automatically by UHT). I can look into getting this automated but afaik it is a manual process now for all classes.