I have ID2017 & ID2020 installed. As a test, I deleted com.adobe.InDesign.plist from the prefs folder. I noticed InDesign is not generating a new plist file. Is the plist only used for older versions of InDesign?
Also, it is possible to have 2 different workspaces using different sets of swatches & paragraph styles? Like workspace #1 will have a swatches palette with 3 PMS colors & 2 paragraph styles & then workspace #2 will have the swatches palette with 10 PMS+3 CMYK colors & 10 paragraphs styles.