Subscreen Enhancement - Very Important

Hi,

Sometime ago, I create a subscreen enhancement in terms of a field exit. Thus, 2 fields were added to the "Basic Data 2" screen in MM01/02/03.

If these fields are filled manually and saved, you can see the changes in MARA.

However, if through an LSMW, the fields are not updated (though other fields in the LSMW are.)

What could be the problem and how can I fix it?

Thanks,

John