Calibre 8.2.1 deleted all my Kobo collections

[PeterT]

Originally Posted by PetBest

Tab collections, covers & uploads
----------------------------------
Collections: checked
Collections columns: checked (but field entry is empty, as my column field name is #collections)
Create Collections: checked
Delete empty Collections: checked
Use Kobo viewer for EPUB books: checked
Do not treat replacements as new books: checked

I'm not sure where you got the idea that a default collection column is used....

I've just taken a quick look through the code for both 7.26 and the KTE plugin and nowhere do I see a default collection name listed.

[DNSB]

Originally Posted by PetBest

Device is Kobo Libra.
I use Auto management and the kobotouchExtended plugin on Calibre 7.26.0
I added a custom column named Lookup name: collections with type: text columns shown in the Tag browser
In the browser you see #collections when you hoover with the mouse over the header.

Tab File Formats
----------------
kepub to cbr are checked
Read metadata from files on device: checked
Use sub-folders: checked
Save template: default {author_sort}/{title} - {authors}

Tab collections, covers & uploads
----------------------------------
Collections: checked
Collections columns: checked (but field entry is empty, as my column field name is #collections)
Create Collections: checked
Delete empty Collections: checked
Use Kobo viewer for EPUB books: checked
Do not treat replacements as new books: checked

Tab Metadata, on device and advanced
------------------------------------
Update metadata on the device: checked
Set series information: checked

Hyphenation and Modify CSS tabs are kept with the defaults

I would suggest adding a directory to the save template. My save template is:

Ebooks/{author_sort:sublist(0,1,&)}/{title} - {authors:sublist(0,1,&)}

I use a directory called Ebooks in the root my Kobo's exposed storage to keep from overloading the root directory and it's limited number of directory entries. The sublist(0,1,&) limits the author_sort and authors to using the first name in the list which keeps the paths shorter.

I would place #collections in the collections column field. As far as I know, there is no default for that column and you do not mention a template for creating columns.

I would remove the checkmark from Do not treat replacements as new books since if you make changes in the ebook, you can get some very interesting results (especially if those changes regenerated the table of contents).

From what you wrote, you have configured the Sending books to device preference to have Automatic Management selected in the Metadata management field.