in KP26 activity types allocation cost element displaying old cost element

Hi,

I changed cost element in activity types. But in KP26, activity types picking old cost element only.

Ex: I changed 9430000002 for Labour activity with old one 9430000001 but in KP26, while planning for Labour activity it is picking 9430000001. so its becoming problem while running CK11N.

Please suggest.

Thanks

Neeraja