In CHI spec, if the Requester initial state is UD or SD, what the final cache state of a ReadClean transaction should be?

In CHI specification,

Table 4-33 shows that the Requester final cache state of a ReadClean transaction is UD/SD while its initial state is UD/SD/UDP.

But in Table 4-5, it seems that only UC/SC state is permitted for ReadClean request.

Why is that?