It would be helpfull to be able to edit calculation model by enabling insert of a step in an existing calculation model. Example, adding a condition to an existing scenario require today to delete all steps post-condition.

Benefits:

• Avoid losing configuration when adding a step (and potential errors)
• Avoid the workaround : create another calculation model and switch the calculation profile. This workaround induce emissions to be linked to the old calculation model/the new one