[jhowell]

I did some testing and was able to duplicate some of what A Lurker is seeing with importing MOBI books into calibre.

I created two books in MOBI format by conversion in calibre with with two authors each. In one I chose the option to "Use author sort as author" and for the other I did not. I used a MOBI file dumper to verify that both author names were in both MOBI files. The first file has the names stored in "last, first" format and the second had the names stored in "first last" format. This is as expected.

I then copied the files from the calibre library and re-added them as new books. Both books imported with both author names shown in "first last" format in the author field (first1 last1 & first2 last2).

However the author sort field came out different in the imported books. The book that had names stored in "first last" format showed both names in the author sort field (last1, first1 & last2, first2). But the other book, with names stored internally in "last, first" format, showed only the first author in the author sort field (last1, first1) marked in red. So there does appear to be something going wrong with author sort during the calibre import of that book.


EDIT: Public domain book that demonstrates the problem attached.