Kernrechtsfrage
Whether the father could retroactively attack the 1 December 2005 ratified support agreement and stop payments from dates before its ratification.
Extrahierter Entscheid
The ratified agreement had res judicata effect and could not be challenged outside revision proceedings; retroactive suppression was therefore unavailable.
Extrahierte Begründung
Once ratified, the settlement became part of the divorce judgment. The father could not, under the guise of modification, contest its validity because the children allegedly failed to restore relations.