A party who files a motion to modify an order that provides for the appointment of a conservator of a child, provides the terms and conditions of conservatorship, provides for the possession of or access to a child, or provides for the support of a child based on a material and substantial change of circumstances may not be considered on that basis alone to have admitted a material and substantial change of circumstances regarding any other matter.
Official text of the Texas Family Code as published by the Texas Legislative Council.