The questions regarding the prequalified joint designs usually states whether the "as detailed" is applicable.
If the questions asks for the range of root openings and there is no mention of "as detailed" in the question, then the range is the nominal plus or minus the dimensions of the "as fit-up".
If the question asks for the range of root openings for the "as detailed" condition, then only the tolerances of the "as detailed" are added or subtracted to the nominal value of the root opening listed.
If the question askes what is the range of the root opening for a specific joint detail for the "as detailed" root opening on the symbol is listed, i.e., 3/8 inch root opening, then the "as fit-up" tolerances are added or subtracted to the 3/8 inch dimension.
I hope this helps.
Best regards - Al