There are some backend changes with lightning like the file attachments and where they are stored. When you turn lightning experience on and have users in both modes, what is the impact of backend changes on classic.
3 comments
@Rob Admin, here's a little more info about options for making files from the Documents object available in Lightning Experience: https://help.salesforce.com/articleView?id=docs_documents_to_files.htm .
Yes, Documents will continue to exist as-is in Salesforce Classic.
