Group for removed labels

When label is removed, annotated data still have that label. we can only see them if we switch off the annotation one by one or by group. if we witch off all the labels we can't see them.

It would be easier if you can add a group for removed label so we can switch off the rests and keep those on. This is very helpful for us to re-label them or maybe delete them.

right now, I download the annotations and then run a script to see where those labels exist in which image.
Also it could be easier if we can just flag file with removed labels or have a page to see those files.