def METHOD_NAME(self, *args, **kwargs):
    if not self._importing or not self.modified_date:
        self.modified_date = timezone.now()
    if not self.status_id:
        self.status = self.project.default_issue_status
    if not self.type_id:
        self.type = self.project.default_issue_type
    if not self.severity_id:
        self.severity = self.project.default_severity
    if not self.priority_id:
        self.priority = self.project.default_priority
    return super().METHOD_NAME(*args, **kwargs)