Serioius problem filtering on annotations where one whiches to exlude a match

[Jari Häkkinen]

The problem is that when I use a filter like

<>string

then all items with annotation type == string are removed but also items without the annotation type. This is at best confusing, but removes items from the listing that should not be removed. We understand the difficulty to fix this with the current annotation filter system. However, as it is now, non-experienced users will have problems with <> filters.

A query that lists all items that has no value for a annotation type would be useful, or maybe forcing a dummy value to items that has no value for the annotation type filtered.