[Lazarus] Something goes wrong while streaming nested components

[Kiên Nguyễn Tiến Trung]

I have been successful to save a component to a text file. However, I have
a problem while reading them back.

To illustrate, this is the text file created by saving the components.

object Parent1: TParentClass
  Child = Child
  Value = 54
  Str = 'SP'
  List.Strings = (
    'PV'
  )
  object Child: TChildClass
    Value = 85
    Str = 'WO'
    List.Strings = (
      'QL'
    )
  end
end

When I load the component Parent1 using this file, properties Value, Str,
and List are loaded successfully. *However, the property Child is not
loaded.*

It seems that there is a TChildClass object created and then increases the
ComponentCount of Parent1. But it is not what I want. I want the property
Child be loaded instead of creating a new object.

-------------------------------------

Please download the attachment to see how it acts. The way to reproduce is
described as following:

1. Press RandButton, then press ShowButton, the message should look like
this:
Parent: Value=54, Str=SP, List=PV, ComponentCount=1
Child: Value=85, Str=WO, List=QL, ComponentCount=0

2. Press SaveButton

3. Close the form and reopen it.

4. Press LoadButton, then press ShowButton, the message should look like
this:
Parent: Value=54, Str=SP, List=PV, ComponentCount=2
Child: Value=0, Str=, List=, ComponentCount=0
(What I expected is
Parent: Value=54, Str=SP, List=PV, ComponentCount=1
Child: Value=85, Str=WO, List=QL, ComponentCount=0)

I spent about 12 hours to find out the proper way but I failed.
Please help me. Thanks in advance.
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