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In the image , i have some columns which are hidden on loading of gantt chart,
But it is still listed as part of columns field dropdown
I want to hide them from viewing, how do i achieve it.
( I do not want it to be listed in that dropdown either).
When i import this file, the top task doesn't appear.
Same happens in the example as well.

https://dev.bryntum.com/examples/gantt/e ... ct_import/


Thanks,