Come across an odd problem today.

I have noticed that a couple of titles have vanished from my collection.

These are the UK R2 Farscape Box Set 2.2 and one of the two child profiles - Volume 2.3 is missing but Volume 2.4 is still there.

I went to add them back into my collection thinking that I must have deleted them somehow only to find that they are not showing in the master database 
They were there because I downloaded them originally and have even uploaded corrections in the past.

I have just gone to Restore my database from my last backup and those profiles are showing in the backup file but when I try and restore them I get a "Data Error" message.

Short of creating the profiles from scratch again, does anyone have any ideas?

Oh and I've also tried a database repair but to no avail.

Don't have the UPC to hand at the moment but I have tried the repair tool but it didn't help.

As I said, what's odd is that these are showing in my backup file which I made last night. However, they are not showing in my online collection which was uploaded before I made the backup.

Found the BoxSet. It has the UPC 5-30305810078. The profile looks OK.
I had a similar problem once, so probably this helps: In you collection list go to the tab "See All" and here check for empty fields. Sometimes this helps.
To check if it's still in your collection use "Alt + F10" and enter the UPC of the Boxset it should get listed if still in your collection.

EDIT: OK, I was too slow then. Glad you figured it out yourself.