Hi Jon, The fields won't update automatically, but there are external events that could potentially cause a recalculation. In situations where I want a "stamped" calculation that will not change or update if/when the form is re-calculated, I take this approach: Assuming your field name for the calculation is something like "Internal Reference Number"
IF(ISBLANK(Internal Reference Number,(CONCAT(RIGHT(YEAR($$TODAY),2),"W",Reference Number)),Internal Reference Number))
During a calculation event, if no value has previously been recorded to Internal Reference Number, it will perform the calculation with the current year. If a value has already been recorded to the custom field, it will replace it with whatever value was already recorded (stamp the same value on top of itself). Updating the calculation should not impact any recorded values; but it's always smart to test these out in your Preview environment first as a matter of safety and caution. William English T-Mobile
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