Why are there different messages after I select "invalid flag"

Question

I've read this, so I understand that every time I select "invalid flag" the original flag will become disputed, and will be listed as such in my flagging summary. But why do most of these flags show up in my flagging summary like this:

invalid flag – 17 hours ago disputed

but one or two show up like this

invalid flag – 19 hours ago disputed - a moderator reviewed your flag, but found no evidence to support it

Is there a difference? Does the latter mean that an actual moderator took the time to look at the original flag, and also selected invalid, while the former indicates that no moderator ever looked at it?

Answer 1

The latter message only shows up when a moderator clicks the radio button in a "dismiss flags" dialog that is captioned "A moderator reviewed your flag, but found no evidence to support it."

I assume your former example came from the /tools/flagged page, where reviewers can "disagree" with a flag. Flags that already have a "disagree" on them can be dismissed by a moderator without providing additional explanation.