We have found that when entering finished production, that the use of the F3 key "Clear this record" does not work as suggested. If a qty is entered to the completed field prior to pushing the F3 key, the inventory on hand qty is adjusted, but no record is shown in the transaction listing. We use Lot Control as well, and the above situation does not establish a Lot record because no Lot Reference has been entered.
I have tabled this as a warning, but if it can be fixed it would be appreciated. The problem occurs for us when tring to use F2 lookup for checking the Lot Number, and accidentally hitting F3.