I’d say “almost”.

You can save a planning baseline before doing anything experimental, then restore your baseline.

This still means your new scenario is visible during the time you implement it.

There are several caveats when restoring a planning baseline, mainly you’d want to read the business rules that apply: https://success.planview.com/Planview_Portfolios/Projects_and_Work/Execute_and_Track_Progress/200_Work_Baselines/080_Restoring_Data_from_a_Work_Baseline

@Mario.munoz - if you haven’t already I would encourage you to vote on the enhancement request to add an ability to do scenario planning in the Plan screen: https://e1.spigit.com/e1prmcontinuous/Page/ViewIdea?ideaid=7717