Yes, I think it means the AcoustID was linked to a source recording which was merged into this target recording. An AcoustID fingerprint will not move from the source recording to the target recording during a ‘Merge recordings’ edit (in MB). However, the AcoustID track will still have this (now re-directed) recording ID for the original source recording.
https://musicbrainz.org/recording/fa9c940c-408b-41f0-b746-997e50e36d72 re-directs to https://musicbrainz.org/recording/958820ff-ec99-4aec-8df3-737d699e796e so it is this recording (fa9…d72) which is the recording that received the AcoustID, which was then lost (from the MB view) during the merge into 958…96e.