Nope, it's how I do every brew larger than 3 gallons. It will make getting an accurate gravity reading a little more difficult. You can either split your first and second runnings evenly between pots, or take a gravity reading that is 50% wort from each pot, or both, which is what I do.
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Crooked Run Brewing: Seek Truth, Cherish Nature
Makers of Red Kolsch, Storm, and Shadow of Truth