Arrear WT Amt not getting added into /101 WT in Pay Slip

Dear Expert,

I create following wage types are given below:

5001: Basic Pay

5051: Basic Pay Carry Forward

5052: Basic Pay Arrear

Problem is: The Amount of 5052: Basic Pay Arrear WT are not getting added int0 /101 WT in payroll log..

Due to this: Total Amount is not coming with correct figures in Pay Slip..........

Plse suggest some guid lines,,, GURU..