What happens if a proposed main motion conflicts with an already adopted motion?

When a proposed main motion conflicts with an already adopted motion, it is considered not in order. This means that the new motion cannot be presented for consideration because it contradicts a decision that has already been made by the group. Parliamentary procedure dictates that once a motion is adopted, it establishes a policy or stance that must be followed until it is rescinded or amended. Therefore, any new motion that directly opposes or seeks to overturn the previously adopted motion cannot be introduced at that time. This helps maintain order and consistency in the decision-making processes of an organization.

The other options do not align with parliamentary procedure, as a conflicting main motion does not get approved, discussed first, or amended without addressing the existing motion first.