BPC Table UJA_SVR_DEFAULT find previous values

Hello community

Currently we have a small topic for SAP BPC for NW 7.5

We executed the report UJA3_WRITE_SYS_USERS.

this is mentioned for changing the SysAdmin rights for an specific user in order to get full access to BPC Management Console.

Now we have to revert these changes, but we do not know how to check the previous values for the table UJA_SVR_DEFAULT which is changed by the program "UJA3_WRITE_SYS_USERS"

We know the exactly time when the change was done.

But we do not know how to know which values were in table mentioned.

Do you know how can we get those values, please?

Thank you