Peter
Correct the open balance is maintained in the file ARMast. ARYMst will contain balances, but this is a duplicated record from ARMast for history maintenance purposes.. It is a stored balance and SBT does not recalculate the balance of ARMast or ARYMst, even though there is a Recalculate feature in SBT.

Jon

>So SBT stores balances. I don't have to add up anything? I only hope those balances are alway right. I hate storing calculated items