[BUGFIX] phpcr value format change exception try to delete property and rewrite it

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes


__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | none
| Fixed tickets | #544
| BC Breaks     | no
| Doc           | none
Ok, I see. But for the test it would probably be easier to just create a snippet (array) and then change to internal-link (string). Could be a bit confusing to read the test otherwise.