- Joined
- Feb 7, 2019
The engine switch is irrelevant; a ton of things changed between Shenmue I and Shenmue II engine-wise (and save data-wise too). It's exactly as Spaghetti and Zoyous said above - licensing between the parties involved, both with regards to the contents of the save files as well as their formats.
It's totally relevant. Between Shenmue I and II, there were engine tweaks and overhaul. Here's we're talking about TWO different engines.