I am not quite sure what you mean by 'offline' publishing, but you can still choose to publish a BIMx model from the FILE menu.
This will allow you to create a new publisher set or update an existing one.
If you don't have that option, then you may have to add it to your custom Work Environment or load a standard WE.
One of the forum moderators. Versions 6.5 to 25 Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10 Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10