Moving book causes settings and bookmarks to be lost

[ghost]

Version: 2.7.9*

Document Viewer is a really nice piece of software. Thanks for developing it! Unfortunately, I encountered a bug...

Steps to reproduce

1. Add a bookmark to a book.
2. Change the book's "day" or "night" status to whatever is not your default.
3. On the bookshelf, long press on the book to bring up the contextual menu.
4. Press "File operations..."
5. Press "Move book to..."
6. Select the new directory for the book, and press "OK".

Expected result

When the book is opened after having been moved as above, the bookmark is still available, and the day/night setting is retained.

Observed result

When the book is opened after having been moved as above, the bookmark is no longer available, and the day/night setting is not retained.

* Yes, this is an old version, but I can't see anything in the issues, pull requests, or git log to indicate that the issue has been fixed.