Comment 1 for bug 527201

this is caused by common filter/search mechanism usedin ehcp.
search terms are hold in session, and same session variables are used in all search forms in listings.

not only for backups, for all kind of searches. (in some old versions of library, there existed a link like "clear session" which fixes this, but it needs to be used manually.. not a final solution)

I will try to fix/find a workaround for this.