Thanks for sent dataset. Lost two days on this but finally cracked it. One problem is of course poor control point placement but other issue was that the IMU positions are actually RTK corrected so Contextcapture was going crazy for some reason if using default settings to for "innacurate metadata" so with or without using GPS positions the result was bad with lot of tie point ghosting etc and control points didn't help to fix that. Finally after multiple attempts finally tried to use positions as "accurate metadata" and it aligned correctly. Added control points using EGM96 geoid as vertical reference then position accuracy is not less than 5mm. communities.bentley.com/.../MTC_2D00_RivardoPalma_2D00_GPS_2D00_QualityReport.pdf
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