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What if i use Richard Hardy's advice and use data from actual series as reference. This gives me negative numbers. Can you imagine negative sales? And to clarify my original numbers do not have ANY negative number and it does not have any returns or cancellation data!

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What if i use Richard Hardy's advice and use data from actual series as reference. This gives me negative numbers. Can you imagine negative sales? And to clarify my original numbers do not have ANY negative number and it does not have any returns or cancellation data!

enter image description here

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