Calls to RegressionCurveHelper::getFirstCurveNotMeanValueLine in [1] (and calls to other similar methods on the same class) mostly assume that only one trendline / regression curve per data series can be present. With 4.2 (and ODF 1.2) this is no longer true as there can be multiple trendlines for one data series. This calls must be inspected and changed to act appropriately in those scenarios, the method getFirstCurveNotMeanValueLine (and similar) must be removed. [1] chart2/source/inc/RegressionCurveHelper.hxx Regards, Tomaž
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