Hello guys,
we have checked this issue and it this is a desired behavior.
The reason for that is that if there is a situation when the user loads one set of images with defined calibration and lens group in the XMPs but adds different set of images with the same group numbers in XMPs, it could happen that there will be images added to the same group even though they are captured with different optics. This would cause incorrect alignment and this is the way how to prevent it. What you can do now is to enable grouping during import or set the calibration groups for the image selection.
What you can do via command line for now is to use set command to enable automatic grouping during importing the images and group them automatically according to the exif like this: -set “appGroupCalibrationByExif=true” We are currently adding many new commands into the CLI functionality and in the next version there will be commands for defining the prior calibration and lens groups for the image selection.