This. All the gold stores have been stolen is my bet. The only 4D angle I can think of is that this audit is being conducted in such a way that it gives an opportunity for the stolen gold to be rapidly put back where it should be before it's loss is made official and a bigger nastier process will have to commence. Like that old school teacher trick of announcing loudly that something is missing and that "I'm going to turn my back for one minute and by God it had better be put back when I turn around again".