Adding a shot with a with two sub sequences can break object bindings between the subsequences

Bindings can break when added to a master sequence when the binding is in a sibling sequence. 

1. Create two sequences named SequenceA and SequenceB
2. Add a cube to A and a sphere to B
3. Add A and B as subsequences to a third Sequence (SequenceAandB)
4. Add an attach track attaching the sphere in B to the cube in A
5. Add SequenceAandB to a master sequence as a shot (drag and drop)
6. Open SequenceB from master sequence, and right click on the attach track

RESULT:
The binding is unresolved, instead of being bound to the cube.