Yes, please see the following. This Snapshot is tied to two clones, so firstly, I am unable to determine which Clone should be promoted and when I promote one the other is obviously still tied to the snapshot.
Snapshot:
Clones:
These are the snapshots I am unable to delete due to clones. A few others only had one clone so I was able to promote and delete the old snapshot.
Please let me know if you need anymore information.