Question for moms with split custody?

Any moms who have split custody with their BD with a legal parenting plan…if we agree to a deviation to the parenting plan and then later on no longer agree to said deviation…does the parenting plan default to the written legal parenting plan or do we need to go to mediation to change everything?

Defaults back to legal parenting plan. If that no longer works for you two and you’d like to make changes and make it concrete, then you’d need to go to mediation