Data: "Text" property saved twice

[niello]

        <Window type="TaharezLook/Button" name="BtnTakeAll" >
            <Property name="Area" value="{{0.99989063,-103.95831},{0.99997789,-48},{1,-7.958313},{0.99997866,-16}}" />
            <Property name="Text" value="Take All" />
            <UserString name="Text" value="Take All" />
        </Window>

[niello]

For now it is probably OK to ignore UserString on save if its name is exactly "Text". Need to think of the prefect solution later.