Inserts are highlighted but there aren't any

I opened an older project and it shows yellow i's in the mixer, indicating active inserts, if I understand it correctly. But there are no actual inserts showing. So my guess is that these are VST plugins that are no longer installed (or named differently) on this system, but I don't see a way to find out what they were.
There's no pop-up or warning saying that effect X can no longer be found, the way off-line media is.
Am I overlooking anything or should I put this on the feature request list?
There's no pop-up or warning saying that effect X can no longer be found, the way off-line media is.
Am I overlooking anything or should I put this on the feature request list?