Chromatogram - Dual Chromatogram Mode
In the Chromatogram - Measurement Conditions pane, Instrument sub-tab, the position in which the chromatogram was acquired is included in the Acquisition and Processing Method info ⓐ.
Import of chromatogram and mathematical operations always apply the setting for the Front position of the method.
If the Report Header - Chromatogram Info checkbox is selected in the Report Setup, the reports contain an additional item Dual Mode, which states Front/Back, depending on the position in which the chromatogram was created.