I have run into something similar with a client on 4.3. Did you review Division Maintenance to make sure the Clearing Account is what it is supposed to be? And just for the heck of it, review APCB options. I thought this was an issue that had been resolved in an upgrade somewhere along the line, but my client is still at version 4.3 - although upgrading in a month or so. I'll be interested in the resolution.