Copy of WT MD60 'Arrears Recovery' not clearing Ded. WT amount from ARRS

Question

Since I can't search only the Threads in HCM I will have to make my own question.  Hope soemone has run into this before.
Using US Payroll, copy of schema QP00, we have 2 situations with deductions in arrears that I have not found a working solution.
1)  How do we clear (throw away) amounts in ARRRS table from deductions on an employee terminated years ago?  When they return to us as an Active employee the payroll run applies those deductions in arrears, as it should.  But if we want to forgive those, what can we do so those old arrears amounts are cleared on the employee's first payroll?
2)  When an employee on LWOP returns, (and new deductions are being taken that already have amounts in ARRRS) we want to place them on a repayment plan to gradually repay the arrears.
Even though I made customer copies of WTs MD60, MD70, MD80, MD90 at the same time (for each deduction WT we place in arrears), and verified all the links in T51P1, and Prc Class settings; the payroll run still takes as much net pay as needed to clear those arrears.  And will take the repayment deduction (copy of MD80) from IT 14 as well!!!  So the arrears are cleared, but sadly only from the employee's net pay.
I also have a Balance WT and Recovery WT in IT 15, as directed in all the SAP documentation I can find.  And the link to the actual deduction (a copy of WT MD50), that was placed in ARRRS to begin with, is in place on T51P1 as well.  The repayment deduction WT does correctly reduce the Balance WT (copy of MD70) and creates the Total WT (copy of MD90) with the correct amount during the Payroll run.
I am not fluent in PCRs, but have extensive ABAP skills, and if I had to guess what is wrong, it would appear that something is not right in one or more of the delivered PCRs in the UDP0 schema.  And most likely the URRS PCR, since it looks like that's what processes the MD60 WT copy.
Any advice from someone who's had similar situations, and resolved that, would be greatly appreciated.
Thanks,
Mark

Answer 1

Frederic's right... you're summing up too many statspacks ..
Can't see anything specific apart from the fact that Statspack itself is showing up in the top statements.
First : define 'Slow' . What is your goal for 'Ok' ?
Start thinking about sql_trace, tkprof and 10046 traces