Images disappear when updating phonegap app

I have this phonegap app (ionic) which saves some data as json objects to localstorage and then display it in the view.

This is the form of the object when console.logged:

{
name: Jon Doe,
age: 45,
img: file:///var/mobile.....tmp/cdv_photo_007.jpg
}

The image is added using the phone gap camera plugin. Everything works like charm, but when I installed an update of the app, the images doesn't persist. All the other info in the locally stored objects, however, is still there. And if I edit the item which lacks an image and add a new image, the new image is shown. So the app pretty much works as expected, it's just that the reference to the image disappears when updating.

All help much appreciated!