Note that you can always export the climate view from FT3+ to CC3+ just by going to File -> Save Campaign Cartographer file. There is an export setting there, Legacy Climate Only that will export the climate view, or you can make your own.

But it won't look identical to what you see in FT3+. FT3+ and CC3+ are two different programs that have different ways of doing things, the idea with the export functions is to get the actual data across so you can customize it in CC3+, not the exact visual look.

More maps for the atlas. Thanks @Quenten

Now added to the atlas. Thanks for the contribution @Quenten

Maybe Shessar's North Alarius map in Sue's spectrum overland can provide some ideas.

The grid button only controls the drawing aid grid to help you layout the drawing. What you have there is an in-drawing grid, a grid that is intended to be part of the drawing, which usually live on the GRID sheet and can be hidden bust by hiding the sheet (or the HEX/SQUARE GRID layer).