When you have pending datachanges on the kontact form. It's possible to close the form without saving change or allowing a recovery of pending changes. 

While coping lots of detail into contacts one wrong click will close the form without recovery. 

Reproducible: Always

Steps to Reproduce:
1. Open Contact
2. Type in Any Changes
3. Close the Program

Actual Results:  
Any changes will be lost.

Expected Results:  
Expect a prompt confirming quit and when returning to contact a prompt for pending unsaved edits.

Filing this under Critical because of the data lose was the result in a major client loss. It was a significant loss we will not recover from in the near future.

I hope this can be addressed with a simple confirmation prompt on form close or a recover prompt on contact open.

Documentation was also light so we couldn't see about recovering from a temp directory.