Broken relations result in an exception in upgrade wizard
|Priority:||Should have||Due date:|
|Target version:||6.0 beta 2|
If you are migrating a large website it is likely that there might be image elements with missing images (something wrong with the uploads directory, broken files, whatever). The upgrade wizard does totally break if the file referenced is not found. It should in my opinion not throw an exception in that case (or maybe throw one and catch it), but continue to do the migration and notify the user about not migrated files afterwards.