Feedback Upgrade process & Deprecated nodes

When I updated a project from 2020.1 to 2020.2, I had no idea any shader graphs had deprecated nodes in (still do not know what has changed in said node - color).
But when I double click a shader graph with a deprecated node it immediately shows as unsaved (why?), but through the docs I can see the update process for deprecated nodes.

Should there not be an automatic upgrade option like with materials (this is in the HDRP pipeline) or at least a clear notice on graphs affected? I can read through shader graph upgrade notes every time I upgrade a Unity version and look through all my graphs but maybe an auto way?