[craigmckay]

Originally Posted by user_none

You can use the calibredb command.

Thanks - figured it out:

calibredb.exe show_metadata 439 --as-opf

Exposes the OPF attributes:

<meta name="calibre:series" content="CAC"/>
<meta name="calibre:series_index" content="29"/>

Then, call:

calibredb.exe set_metadata 439 cac.opf

Thanks for your help.

Craig