How to retrieve data that was stored in structures

Hi all

I am facing a tough situation. My scenarios is with the batch management issue.

If you can see the transaction MSC3N display batch data, there is tab changes. here u will find the list of changes. I can find the header data in the table like when it was changed and what changed it like transaction. But I want what is the old value and what is the new value it has for list of batches. But the fileds are stored in structures like CDSHW F_OLD and F_NEW. Is there any way to retrieve all the data.

Please give me any inputs. Inputs will be rewarded.Please let me know if I am clear.

Thanks a lot for the help.

Regards

Ravi