OK, I do my best.
I followed your post
https://www.mobileread.com/forums/sh...77#post4333077 and adapted it to my situation.
Your column
#pen_names is my column
#alias.
I also had an old group search called pen-names consisting of #authors and #alias
and my similar author search is the grouped search pen-names.
When I searched for similar authors in the past, every search looked like this one
but now a similiar authors search with containing aliases looks like this one
I think the confusion comes from my renaming - my grouped search pen-names != your column #pen_names.
I hope I was able to bring some clarity to the issue.
Edit: The same for my Calibre Portable 7.1
not good news for my attention/memory
