There is lots of information you tell the chat that should be considered by the training plan. Now it is: when you mention a preference, the chat offers to save it, for example:
And Plan System Prompt gets adjusted to:
It’s used the next time your plan is rebuilt, until then your current workouts stay as they are.
Things you told the chat before this update aren’t moved over, so mention them again if they matter.
Cool! Just to be sure, if I mention today I don’t like to run Mondays, it will ask to save it to the prompt as your example. After plan regeneration, will that line in the prompt disappear?
That line will stay unless you change it either directly or via chat. Basically you can think about your plan system prompt as a ‘you edited section’ + ‘chat edited section now’
Thanks for clarifying. I hoped it would work like that! 
