Translation lost when doing undo-checkout

[Geert Bellekens]

I've reported before that the translations are not included in the xmi 1.1 export, which is used by version control.

Now an even more serious consequence of that problem arose.
If you do an "undo checkout" EA deletes all translation for the items in the controlled package.

Steps to reproduce:

- Version control a package
- Add translations to the elements in the package
- Check-in the package
- Check-out the package
- Undo Check-out the package
- Notice that the translation have been deleted.

Reported

Geert