Filter for flags on deleted content regardless of content type

Searching for flags on deleted content is a handy addition. However, a content type has to be specified (photo, observation, etc.). With 14 different types, it makes it rather cumbersome to check for deleted flags on all content. Moreover, the Content Deleted section isn’t sticky and reverts back to any if the content type is changed.

I’ve tried fiddling with the URL, but with no success. There is a flaggable_type=all but it can’t be combined with the deleted parameter. All other parameters seem to work.

Yeah, I was going to make a feature request for this a while back when I made the first one, but decided it was too soon. And then I forgot.

Either way, this definitely should be implemented.