I am making an expression map for an organ plugin so that I can trigger different stops of the organ from within Dorico. As there are no default playing techniques for organ stops I created them by myself. However, when I import my expression map some of the custom playing techniques are not important. Specifically, the ones that are mapped as “Technique Add-on Switch” in the expression map.
I suppose “important” is a typo and you meant “imported”. You can click the star on each playing technique (in its edit window, at the bottom) you need so that it will be available in every new document.