Bank Rec GL balance

trin

Hi

This is Navision 4.0 SP1 with SQL 2K. This is the first bank Rec. The client uses multiple currencies for SO and PO but the LCY is USD. There are couple of bank accounts this clients uses, but only one bank uses multiple currencies for transactions. Right now, we are working on USD transactions bank only, and have problems with G/L Balance field on General tab.
When we first Suggest Lines, the G/L/ Balance($) was the same as G/L Balance which was correct.
Then user went back and did a reversing entry(system reversing) and a manual entry for correction . After that, the G/L/ Balance($) was correct, but the G/L/ Balance did not change at all? WHY? There is no Currency Code defined on the bank account card or the Control Info tab of Rec. whst.
Why G/L/ Balance($) does not match G/L/ Balance without foreign exchange rate?
Any sugesstions will be appreciated!