Migrated task.
Comment from original task:

New Writer Document, Insert.Object.Formula, then via "Tools.Import Formula"
insert content of one of the SO sample .sxm's, leave inplace mode, save and
reload Writer document -> content of object is distorted, can only be restored
via activating object

TL->MAV: The base class function GetRefDev was called in Math but the call was
never forwarded from the framework to the Writer documents implementation of
that function. After you looked in it we came to the conclusion that it must be
a problem of the parent which was not set. You said also that it's probably a
problem of the Persist class. However in your office version (m9?) where we
looked for the problem it did not occur.

TL->MAV: occurs in SRC680 m17. Please have a look. 
Thanks!

SBA: Reported from customer too. Flag adjusted.

MAV->TL: the problem take place because StarMath tries to access parent through
'GetDocumentRefDev()' call during loading, but Persist implementation set the
parent for StarMath only after loading. As I understood MBA it is designed so,
so StarMath should postpone call to 'GetDocumentRefDev()' funtion.

SBA->TL: Please tell about effort and risk for a PP2. Thx.

TL: See also #115796#.

Because of a shortage of resources we have to retarget this issue to OOo later.