Quick question about 2K17/2K18 mods

[Dat Blizz]

Just a quick, general question about mods that people made for 2K17 being used for 2K18:

The character files/models work, but the pofo/movesets do not, correct?  I've seen some really good ones just looking around in the 2K17 section, and was wondering what exactly works and doesn't work.

Also, do the media files work the same (Titantron video, ss_mini, ss_wall, etc) or do those have to be completely re-worked for 2K18 from 2K17?

Thanks to anyone that can answer these!