Workflow Audit

We have a need to track every approval action in the requisitions (epro) workflow.  Our business owner needs to track all of the times during workflow for audit purposes.  We are currently on image 29 and want to do this for the requisition approval process.  What we have found is the EOAW_SUMM_DTL record creates a new row for each approval action however if the requisition is pushed back and the same approver who approved it prior approves it again, the table is being overwritten and the original approvals are no longer on the table.  Is there a better table or