At present AttackTrack's context menu has three patterns of Attach target change flow
However, 1 and 3 can correctly change the target, but the result of 2 is different from that.Specifically, the attachment in the selected section is not changed, and a new section is newly added to the end.
This is because the section of F3DAttachTrackEditor :: ActorSocketPicked becomes null when using ExistingBinding.Because it becomes null, a new section is added by F3DAttachTrackEditor :: AddKeyInternal via AnimatablePropertyChanged.
If we pass a Section to FActorPickerTrackEditor :: ExistingBindingPicked like FActorPickerTrackEditor :: ActorPicked , it may be resolved
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-61532 in the post.