[Starson17]

Originally Posted by citac

These files have no author name in the title of the file because they are all saved in their author folder.

FYI, many users will use a file renaming program to rename ebooks with the folder name before import. Personally, I don't do that, but it is an option.

The files themselves are named

01 Title.htm
02 Title Coda Subtitle one.htm
03 Title Coda Subtitle two.htm
04 Title Coda Subtitle three.htm
05 Title Coda Subtitle four.htm
06 Title Coda Subtitle five.htm

After import, calibre reads the author and title tags and populates the metadata with what it finds there. It also doesn't read the order in which the fics should be read, and alphabetizes the fics, which gives me

Title.htm
Title Coda Subtitle three.htm
Title Coda Subtitle five.htm
Title Coda Subtitle four.htm
Title Coda Subtitle two.htm
Title Coda Subtitle one.htm

You are free to import them with the number as part of the title or to bring in the number as part of a series index (via filename metadata import for either). Then you can sort on the title or index to keep your order.

OK, so the files are imported now. I click Convert books, go to search and replace, enter Grzegorz Hordynski into the First expression window, the Search Regular Expression line, and enter the correct author name into Replacement text lin. I hit OK. calibre converts the files into epub.

Good so far

Author is still Grzegorz Hordynski. A simple Search for "Grzegorz Hordynski" and Replace with "Author Name" is not working.

Which "author?" Are you looking at the "author" in the author field of Calibre's metadata? (What you did won't change that - you still need to bulk metadata edit.) Are you looking at the "author" in the content of the book? (That should have changed even though Calibre won't use it now that it's been imported.)