Table Storing Changes in Departments ->GL Cost Centre Information ->Cost Center Manager

We are updating Cost Center Manager in (Departments ->GL Cost Centre Information).
I am looking for the tables which are storing information related to changed Cost Center Manager value.
I am able to find the changes after the approval in the table i.e hr_organization_information_f but I need before approval/pending approval.
I tried using this table- column hrc_txn_header.xml_data_cache but it has many entries for Cost Center Manager against one department(transacion).
If we have some SQL query or tables details, that would be helpful.
Attaching the document for the reference with steps