Vendor evaluation - deletion of key for evalaution criterion

Dear All,

In SAP's Vendor Evaluation, I have two Keys for evaluation criteria: key 01 (Standard) and key 02.

I need to remove 01 key, or else to copy values from 02 key to 01 key, and finally remove 02 key. Is it possible? Could this deletion generate any problem?

Thanks a lot!

Regards.