In the 0.9.0 build 1586 version of photoscan, I have a single camera used for an aerial photo project, and at sometime the calibration was set to groups and permitted the groups to vary. I am trying to import a high precision calibration for all cameras, and setting the calibration to fixed. But every time, the resulting refined calibration shows new groups orientated by flight line. The fixed calibration does not seem to work to stop the regrouping of the calibration.