How do I update Attachments to a VisionOS Entity when a referenced CoreData Entity is updated?

I am getting close!

So far, I can get UI updates automatically in a SwiftUI View when a CoreData Entity is updated. For example, the following list will update automatically when "name" is updated on a StudyParticipantEntity after the view was created, as expected:

          @FetchRequest(fetchRequest: StudyParticipantEntity.fetch(), animation: .bouncy) var studyParticipants:FetchedResults<StudyParticipantEntity>

  List(studyParticipants, id: \.self){ studyParticipant in
        ZStack{
            Text(studyParticipant.name!)

            }
        }

However, I DO NOT get automatic updates to UI in attachments to the model entity that reference the same core data entity:

Creating the attachment, passing in the same core data entity studyParticipantEntity:

      let attachmentRightLegView = AttachmentFollowedRightLeg(
              name: followedRunTimeComponent.attachmentTag,
              studyParticipantEntity: theStudyParticipantEntity
               )
               .tag(attachmentTagRightLeg)

Important: I DO get automatic updates in the attachment if I instead reference a typical value type in the viewModel.

Any suggestions? Thanks much!