In the last version, the trial balance report was changed to include all owners, even if the balance due to them was zero or negative.
In the coming version 9.3, the report has been changed again. Now if the owner is a closed owner, and the balance is zero, they will be excluded from the report altogether. Also the name will indicate which owners are closed. Also the name of the owner will be truncated if it is long so as to not print over top of the numbers.