Deleting audio subtrack deletes the entire track

Noticed that deleting audio subtrack deletes the entire track.

This also appear to happen to affect any property on the track. If I make it inactive or lock it that property applies to each subtrack and not the individual tracks.

1. Create a level sequence
2. Open the level sequence
3. Add an audio track
4. Add 2 audio assets to the track
5. Right in the track window and select delete on one of the subtrack audio

Result: Entire track is deleted.

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

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