Maybe it's a setting I am missing but is it just me or is Wireframe\Turn\Slice now outputting splines instead of arcs and lines?  Spin is lines and arcs but slice now is splined.  I don't remember it being that way before 2020  

I found a decent video if it helps anyone else.  It took care of the things I didn't quite understand...  thanks for everyone's input which also helped. 

Ok, so what I think I'm reading here is if you are doing mill work and use the Casting Model as stock, do all the mill work and then do the turning work as once you begin turning... the stock model revolves and that's that. 

You basically will never see the Milled casting model with turning done to it?  

Is it possible to use a Casting Model or Casting Stock Model through a complete process and have it update for Milling and turning operations?  I go back and forth between milling and turning operations when I process parts.  All seems fine when I begin a process by milling with a Casting Model, but when I begin Turning I get a revolved stock model and I can no longer see some of the cast features in verify for the next Milling process.  Pretty sure I'm doing something wrong, but I'm not sure what that may be.  Tks!