Bug - snapshots doesn't save curves

[PowerUser64]

Describe the bug

The snapshots module cannot save curves.

Build info

f82acc4

Steps To Reproduce

1. Make a curve and a snapshots
2. Add the curve to the the snapshots
3. Create a snapshot
4. Modify the curve's curve
5. Load the snapshot
6. profit

The curve part of the curve won't be returned to its pre-modied state.

curve.save.webm

Expected vs. actual behavior

The snapshots module should be able to save and load curves.