Description of Materail group in R/3 and Product catagory in SRM is differ

Hi,

Description in Material Grp in R/3 and Product catagory in SRM is different.

We have updated Description in R/3 of materail grp but same is not reflecting in SRM even Delta downloading is active?

So what could be the reason or is there any way to update the description as we do not have functionality to change product catagory in SRM which can be change in R/3 only.

Suggest,

Navneet,