Product Items automatically enabled

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I have a very odd problem and don't know how to tackle it.

In c5 ecomm, I edit a product item to "Disabled" status. But the next day I find that it is automatically "Enabled." At first I thought this was due to an automatic sync with a separate product repository where I manage the product details, but I turned ALL of those syncs off. I don't get why or how c5 would continue to automatically override my Disabled status.

If you have any ideas about how to approach this, I'd be truly grateful...