For the existing upload functionality in the "Application" and "Renewal" process you can now set this not mandatory for existing members.
The existing function is in Membership - Setup - Application - "Identity card enable". Which activates a mandatory upload in the application process.
This new setting is in Membership - Setup - Modules.
And can be used for e.g. when you import members in your membership and you don´t want to force them to upload a file.