I have a site built on Commerce Kickstart 1 - Views 3.7.
I have a standard cart, to which I wanted to add photos of the products. It is a view that includes a relationship to Commerce Order: Line items and a contextual filter by Order ID.
Now, I added a reference to the product in order to be able to access the photos. The view works OK, all the initial elements and the images are there, but when i try to edit it, all the relationships are gone and I receive the "This view has been automatically updated to fix missing relationships" message. Both the relationship I added and the default relationship to line items are gone.
Commerce Order: Line items
(Line Item) Commerce Line item: Product
(Line Item) Commerce Line item: Display path
(Product) Field: Image (Image)
(Line Item) Commerce Line Item: Title
(Line Item) Commerce Line item: Unit price
(Line Item) Commerce Line Item: Quantity text field
(Line Item) Commerce Line item: Total
(Line Item) Commerce Line Item: Delete button
To me it looks like a bug in Views? There is a discussion of a similar issue https://drupal.org/node/1860380 (the last post is actually mine). Maybe I am wrong, though, maybe it's me who's doing something wrong?