RainLab\Builder\Classes\MigrationModel::rollbackSaving PHP Method

    protected function rollbackSaving($originalVersionData, $originalScriptFileContents)
    {
        if ($originalVersionData) {
            $this->rollbackVersionFile($originalVersionData);
        }
        if ($this->isNewModel()) {
            $this->removeScriptFile();
        } else {
            $this->rollbackScriptFile($originalScriptFileContents);
        }
    }