All of these should work
If([JA Target Completion Date] <> ToDate("01-01-1970"), [JA Target Completion Date])
If([JA Target Completion Date] <> Date(1970,1,1), [JA Target Completion Date])
If([JA Target Completion Date] = ToDate("01-01-1970"), null, [JA Target Completion Date])
If([JA Target Completion Date] = Date(1970,01,01), null, [JA Target Completion Date])
My favorite is this one
If([JA Target Completion Date] <> Date(1970,1,1), [JA Target Completion Date])
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Mark Shnier (YQC)
mark.shnier@gmail.com
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