There could be two approach I can think of
1. Check the tables to see if the data is there and report not showing up, then report logic needs to be looked.
2. If the data is not there in underlying tables then it could be mismatch between PRASSIGNMENT.practsum and PPA_WIP.
Try the below steps to see if you can get through
1. Admin > finance > manage matrix > set the prior rate
2. Run the full Rate Matrix Extraction job.
3. Adjust the timesheet/transaction down to 0 hours.
4. Admin > finance > manage matrix > set the correct rate.
5. run the full Rate Matrix Extraction job. .
6. Adjust the timesheet/transaction to positive, non-zero hours
7. Run the Post Timesheets (PT) job.
Let me know how it goes
Regards
Suman Pramanik