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Grid coordinate shifts when changing a coordinate system

Question asked by Liam Jagvik on Jul 7, 2019
Latest reply on Jul 11, 2019 by Steve DiBenedetto

We are changing a coordinate system in an existing TBC project. The office entered grid coordinates are changing by -408mm in the easting and +332mm in the northing when the coordinate systems are changed. 

 

TBC Project with coordinate system "A". This project contains a site calibration with horizontal and vertical parameters. 

 

This is the same TBC Project, but it contains a new coordinate system "B". This project contains no horizontal or vertical calibration parameters. 

 

Is there a reason why the grid coordinates have changed? I would have thought the grid coordinate (set to control status) should be the same in all projects irrespective of any coordinate system selected?

 

Cheers

Liam

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