Just an update in case anyone is wondering. That idea did sort of work but not properly so we have given up now in trying to repair my iTunes and am concentrating on rebuilding it back from the last Cucusoft backup.
It's a pity the software doesn't work anymore to create backups as the restore function worked perfectly. My only issue was my 180+ audiobooks which I had to reload as they didn't restore because I couldn't do the authorisation as the restore was progressing. Luckily I had the original downloads on a HDD so I just reloaded them last night and they all imported okay. I didn't have to redownload any of them. We just have a dozen albums to reload now and we should be done
