Managing forms at low level

Currently I am Managing all form objects at low level by
code,
replacing it's CLASS property to a new value,
this new value is the new baseclasses from the new
framework.
Ex.: Oldbaseclase: label
Newbaseclase: mybaselabel

I modify the MEMO fields in theSCX correctly, then I compile and run the form.
Everything works perfect. ...BUT
I have several forms with OLE Inserted objects, When I replace the CLASS property in the SCX memo fields to point to my new baseclasses it looses the reference to the ActiveX Object that it referenced before the update.
So, I just can replace, the base classes, the methods, but I can't modify the property
that references the ActiveX .

I hope I was clear, any idea? I tried changing the OLE2
field and recompile it, but still stuck.

Regards,
Bastian V.