[Yungfil]

Hi all, When I send an ebook to a device Calibre kinks in the auto format conversion (normally epub to azw3 in my case) - which is a great feature. The problem I have it also saves the converted file to my Calibre database, typically doubling the folder size for that particular book. It also means that if I have been modifying the epub file I have to be careful to delete the old azw3 file before I send to a device so that Calibre will convert the later epub before sending.
My database is 8gb, 8000 books so double book formats is becoming an issue.
If I'm flagging an issue that already has a setting to resolve this is settings, my apologies!
Any thoughts