Last December we made some technology changes to how ASSIST manages uploaded attachments and generates application and form previews. We migrated all your uploaded attachments to the new technology and moved new application and form previews to the new technology.
On February 27, 2019, we will remove access to any application previews generated in ASSIST prior to December 12, 2018. You can generate a fresh preview at any time. Individual files uploaded in ASSIST and any submitted and assembled application images accessed in eRA Commons will remain in place.