Hi. I restored my library on a new Acer Aspire F15 running Windows 10 and then updated Calibre to v2.78. Everything had been going along swimmingly. I love being able to mark books in series and use that ability all the time in the bulk Editing Metadata where they are numbered automatically (just love that!).
However, after the upgrade, all the series in my 7,493 book library have disappeared. Fortunately, I got into a very early habit of setting up series for when I transfer them to my Kindle (ie. H1 Book name, H2 Book name etc.) I estimate at least 40% of my library is series and I can re-do them but would prefer to just flick a switch and have them re-appear1
Am I not holding my mouth right or is this a known issue? I have run Library Maintenance and it has found no errors.
Any ideas please?