<Entity id="{93A3A555-0196-47DF-8859-75E6FB391A14}+00000000" Name="ezobject_translation">
  <EntityProps>
    <Name>ezobject_translation</Name>
    <Type> 1 </Type>
    <Index_Generate> 1 </Index_Generate>
  </EntityProps>
...

<Entity id="{93A3A555-0196-47DF-8859-75E6FB391A14}+00000000" Name="Перевод объекта">
  <EntityProps>
    <Name>Перевод объекта</Name>
    <Type> 1 </Type>
    <Index_Generate> 1 </Index_Generate>
    <Physical_Name>ezobject_translation</Physical_Name>
  </EntityProps>
...

<Attribute id="{83C04F84-2FE2-4D56-9663-680BDC0CBBCF}+00000000" Name="description">
  <AttributeProps>
    <Name>description</Name>
    <Type> 100 </Type>
    <Datatype>VARCHAR( 200 )</Datatype>
    <Null_Option> 1 </Null_Option>
    <Order> 3 </Order>
    <Physical_Order> 3 </Physical_Order>
...

<Attribute id="{83C04F84-2FE2-4D56-9663-680BDC0CBBCF}+00000000" Name="описание">
  <AttributeProps>
    <Name>описание</Name>
    <Type> 100 </Type>
    <Datatype>VARCHAR( 200 )</Datatype>
    <Null_Option> 1 </Null_Option>
    <Order> 3 </Order>
    <Physical_Order> 3 </Physical_Order>
    <Physical_Name>description</Physical_Name>
...

            XmlDocument docNew = new XmlDocument();
            docNew.Load(oldFileName.Text);
            XmlNodeList lst = docNew.SelectNodes("//Entity");
            foreach (XmlElement ent in lst)
            {
                String physName = ent.Attributes["Name"].Value;
                if (ent.SelectSingleNode("EntityProps/Physical_Name") == null)
                {
                    ent.SelectSingleNode("EntityProps").AppendChild(docNew.CreateElement("Physical_Name"));
                    ent.SelectSingleNode("EntityProps/Physical_Name").InnerText = physName;
                }
            }
            lst = docNew.SelectNodes("//Attribute");
            foreach (XmlElement ent in lst)
            {
                String physName = ent.Attributes["Name"].Value;
                if (ent.SelectSingleNode("AttributeProps/Physical_Name") == null)
                {
                    ent.SelectSingleNode("AttributeProps").InsertAfter(docNew.CreateElement("Physical_Name"), 
                        ent.SelectSingleNode("AttributeProps/Physical_Order"));
                    ent.SelectSingleNode("AttributeProps/Physical_Name").InnerText = physName;
                }
            }
            docNew.Save(newFileName.Text);