And further, I should note that the problem is not just for North America. The proj-datumgrid file includes information for US, Canadian, French and New Zealand that presumably also makes datum conversions for those areas incorrect when the grids are missing.
And further, I should note that the problem is not just for North America. The proj-datumgrid file includes information for US, Canadian, French and New Zealand that presumably also makes datum conversions for those areas incorrect when the grids are missing.