If you have the suppress zero accounts option turned on, does the row show up in the print preview window? The suppression is really for the printed copy of the statement and sometimes a row is not visually suppressed when working on a statement.

If you select (highlight) and right mouse click on the row in question, is the "Zero suppress" option checked in the context menu?

If you ZIP the ledger and the statement and send it to me I will take a quick look to see if the problem is easy to identify.