A session swap is not the same as a plan change
If you swap an exercise inside a live workout, that can be a one-session decision. If you save a preference for the future, the plan can keep using that replacement in later sessions.
Revert returns the slot to its original planned exercise when that is what you want.
Preferences are soft guidance
Movement preferences do not override hard equipment availability or movement limitations. They are used to break ties between valid options, not to force an exercise the app thinks does not fit your setup.
Progression follows the performed exercise
Today, progression history is mainly tied to the exercise you actually performed. If you switch from one press variation to another, the recommendation can start following the replacement exercise’s own logged history.
That makes swaps practical, but it also means a new variation may not inherit the exact loading path from the old one.