Was looking for bulk updating images and raised feature request @ Bulk updating filefield link(remapping), description, alt text. and found this module which provide option to attach the existing image using token.
This works great when creating single node(entities) and would be great if it exposes the option to VBO.

Use case:
1. Initially product image's default value will be set to blank.jpg. Original product images will be uploaded using ftp to files directory. These files will be named after product title ex:panasonic_model_xxx.jpg and should replace the path of blank.jpg using VBO.

2. Users upload non-related/abusing images and need to be set to blank.jpg which was uploaded in files directory.