I must be a Calibre Cretin. How is it that I can select about 20 books where the author is FirstName-Series-Last
and click Edit Metadata on the toolbar
and choose to edit as a batch
and correct the author name and click OK;
and I get a message like "Updating 3,818 books" or whatever the text was.
More importantly perhaps - how is it that it's not possible to at least confirm this action?? How the H -e double hockey sticks did I get 190 or so extra books??
It seems the only way I can fix this now is to wipe the library and bring in my backup directory. So sad.