[pollybel]

When I opened Calibre yesterday it showed nil books, authors etc. I therefore did a restore and all my books appeared in the library. Great. The problem is that I had previously added a column to allow me to mark the books I had read. After restoring this column is no longer there. I know I can add a new column but is there a way to retrieve the information of the books I read or is this data lost in the restore?

Thanks in advance