Most items are missing from BSIS

Hi,

I'm querying BSIS (direct read from table) via SQ01, and most items are missing. It seems to depend on the general account number: those registered in a profits-and-loss type of account are missing. Those registered in a balance-sheet type of account are here. They're not in BSAS either. Are all uncleared items supposed to be in BSIS? Where can I look for those?

Thanks.