How change cmyk global color swatch to spot color?

[Thomahawk]

Using Publisher 2.0.4 on Mac Monterey

How can I change a cmyk global color swatch to spot color? (for printing pantone instead of cmyk)

I have a large document with color swatches used for the whole document.

[lacerto]

As far as I know there is no way, other than selecting an object with the color to be changed and selecting separately the "same" fill color and stroke color (Select > Select Same > Fill Color and Select > Select Same > Stroke Color) and then assigning the fill and stroke of found objects the spot color swatch that you have already created. "Fill" seems to select also fills within text frames even if it does not visually appear so, so it is not too bad. But you cannot just change the type of color swatch from one color space to another (e.g. from CMYK to RGB/Spot color or vice versa).

[thomaso]

In addition to @lacerto's hints: You can't turn an existing swatch to a global / a spot colour swatch and you can't change ("edit") the spot property of a global swatch but its overprint property only. Thus to replace a CMYK by a Spot Colour you need to create a separate spot swatch first.

[Thomahawk]

Not only that you can not even change from cmyk to spotcolor or vice versa, the painful way through selecting same fill and apply a new swatch does not even work consistently through the whole document. There are always objects left out, despite them being set exactly the same way. Plus you have to do that for each obacity variant of that color individually.

This is a nightmare!