If the spot colour is linked to a ACB that isn't installed, then the colour will be visualised as black. It will still separate correctly and be picked up by a spot colour replacement lookup table correctly in other software if the name matches... But in Adobe CC software such as InDesign, Illustrator it will be black! In Photoshop, if the linked spot colour is using one of the legacy colour book files that have been removed, the colour will be displayed correctly as it was defined in that historical point in time.
In all cases, all one needs to do is break the link the old library file by defining the spot colour values in Lab, RGB or CMYK values rather than using the linked color book values.
https://prepression.blogspot.com/2022/12/photoshop-2022-pantone-color-book.html
In all cases, all one needs to do is break the link the old library file by defining the spot colour values in Lab, RGB or CMYK values rather than using the linked color book values.
https://prepression.blogspot.com/2022/12/photoshop-2022-pantone-color-book.html