Old material number(MARA-BISMT) Change in Mass

Hi,

I would like to change/update the old material number (MARA-BISMT) for the relevent material number. I have an access for the transaction code MM17 (Mass Maintenance). But the issue is i can't update different material with the relevent old material number. For example, Material number 100,101,102 having the same old material number as 200, then i can able to change/Update through the transaction code MM17. Here Material Number - 100 need to change as 200 ; Material Number - 101 need to change as 201; Material Number - 102 need to change as 202. For this case i can't change. Kindly suggest the alternate way or suggest me any possibilty to update. I need to update above 500 materials. If you help me its really helpfull to update in mass. Kindly let me know if you have more clarification.

Thanks!

Regards,

Arputharaj.V