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If you have multiple placements on a flock, the system will look to the hatch date rules also found under settings à Settings (ribbon bar)
Cycle and Weeks in Cycle
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Adjust the cap at age and it will change your weeks in cycle.
Another thing that will affect your weeks in cycle is if the flock has gone into molt cycle or is in cycle 2, the molt date will affect weeks in cycle.
-----Screenshot of molt dates-----
Also, important to note that on different reports an age can be configured to be rounded up, rounded down or straight rounded.
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