**BUG**
Concise problem statement: If a pcb is opened, changes made, then saved. The changes are not saved.
Steps to reproduce bug:
1.open an existing pcb
2.Add or make changes to.
3.Save
Results: The editor will not export or save the changes. The pcb will be correct in the editor and saved and the fabrication output will be wrong.
Expected results: changes saved
Browser: safari
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
