Apparently using bookmark is not a reliable solution here, because the data changes.
Maybe it is better to use a variable that keeps the list of the values to exclude. In this case you can create a button (or text box) with actions "Select In Field" (and use variable here), followed by "Select Excluded".
Try to use an advanced search in order to exclude values and, once you have applied it, save the selection as a bookmark.
Then, load other values to the field and apply the bookmark...new values will be affected by the bookmark.
Take a look to the attachment.
Test_Exclude_Bookmarks.qvw 144.8 K
Yes, I agree with Andrea's approach.
The key distinction is the bookmark formed from advanced search evaluates like a series of WHERE clauses, where a standard bookmark is an explicit list of values to match.
The standard bookmark will remain static and not change according to new data, while the one formed from advanced search will re-evaluate every time. Very neat feature.