Also If I open some file with pre-saved old Pantone Color (with CMYK-definition), the new CC2020 show it as Spot color with CMYK-definition mode.
But if I copy-paste object with this color to another file (new 2020 of old CC-generated file), the color change to "Book" with Lab-definition without any warnings.
Book.png
Thi is a big problem. Because You can made many changes in file and all stay correct, but one Copy-Paste change the color.
Also If I open some file with pre-saved old Pantone Color (with CMYK-definition), the new CC2020 show it as Spot color with CMYK-definition mode.
But if I copy-paste object with this color to another file (new 2020 of old CC-generated file), the color change to "Book" with Lab-definition without any warnings.
Book.png
Thi is a big problem. Because You can made many changes in file and all stay correct, but one Copy-Paste change the color.