Question:
Is there a way to display a detail of a gl balance in SAP that will filter out posted entries that net to zero?
Answer:
if you have defined the account as an open item managed one, then the accruals and their subsequent reversal should show as "closed" not "open" items in FBL3N. If you have not done so, you have a trickier task, as I don't think the rebuilding of open items is directly supported any more. Please see report RFSEPAxx (i think xx=04) and read the documentation as this tells you what you need to do.