As I have already said, configure another abs type as LOP; you can copy an existing LOP config, with no w/t creation in absence valuation in V_T554C. The user guide for the HR/Payroll should include - changing/splitting any Mat.leave record with the existing abs type to the new one for the period in excess of the limit for the paid Mat.Leave.
It is possible to
(a)create a user program to do such splits and report the existing record & the changed record/s and
(b)a batch job to run this program daily overnight before Time eval & Payroll.