Issue with Deduction & Balance wage types

Hi

I have set up deduction and balance wagetypes and all entries in T51P1 are correct - initial entries are made in IT0014 and IT0015. When payroll runs the correct processing is made and the payroll results show the correct amounts i.e. IT0014 wagetype is deduction - IT0015 wage type is balance and there is a total deduction wage type which has correct amount.

The problem is that the wage type stored in IT0015 is not being updated so after a number of months of payroll processing the balance wage type is 0 in the results butnot in IT0015 therefore although the 'loan' balance is now 0 deductions are still being made as IT0015 is not 0.

Does anyone know what the issue could be?

Any help much appreciated!!!

Cheers

Euan