Why All Years member is set as Dynamic Calc and Two Pass in Modules BSO?

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Why All Years member is set as Dynamic Calc and Two Pass in Modules BSO?

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Why All Years is set as Dynamic Calc Two Pass in Modules BSO?

I can update storage to Label Only and uncheck Two Pass but when I close these properties are back. We do not need to sum any years. We would like to keep it as Label Only.

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