P: Snapshots in PV2010 do not store the tone curve when created

A snapshot *created* in PV2010 does not store a point tone curve.

1. Switch to PV2010
2. Edit the point curve somhow
3. Create a snapshot
4. Edit the point curve again
5. Recall the snapshot

Expected: Point curve reverts back to the edit in step 2
Actual: Point curve reverts back to "middle contrast"

Shapshots that are *updated* rather than *created* behave correctly!

LR 4.0 64 Bit, Win7.

Note: This problem is probably related to (but not the same as) http://feedback.photoshop.com/photosh... and http://feedback.photoshop.com/photosh...