Quote:
Originally Posted by theducks
That is not quite true: Calibre will ASK if you wish to ADD those columns. You can decline 
I don't remember if this persists on every time you transfer IF, you decline. (all my Libraries that I do this , match columns (lookup names) |
You are correct, I missed that step even if was fully aware of it
Also: Calibre always ask when copying books to a library with different custom columns (as it should be!)