C++ Transition Guide for 4.20

[looter]

@KillerPenguin

Just upgraded to 4.20.2, and when ClientAuthorativePosition is set to true, CharacterMovement get velocity always return zero on replicated actor. (Used to work fine in 4.19.2)

This is a serious bug, for all those who use this option. Can we get this fix asap?

Best.

Thanks for this post. Spent hours trying to diagnose an issue, looking at the custom movement component and ABP changes and it turned out to be this simple but very serious bug.