Changing Schema in existing Rate category

All,

I have one question. and not sure if it will work fine. That is the reason posting here. For any information, please let me know.

I have one Rate category A and currently having schema X in this. Now there is new requirement to change the schema under that Rate category A to new Schema Y. Just wondering if it will work. And what could be the impact of existing installations wherein these Rate Categories are already used.

Need information urgently.

Thanks,

Tripti