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>The problem is that other customers and transactions from the same time period would still be there, setting up the possibility for someone in accounting to re-run old reports and get really bad numbers. I see disaster in the making there.
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Ha..yeah, I've run into situations like that too. After putting about 20 holes in their arguments for doing things like that, they've usually "decided on their own" that it was a bad idea. I think that's the real secret to getting what I want - making them think it was their idea. I try not to make them look too stupid (unless I have too) ;-)