I already have taken a backup of Session.sublime_session from C:\Users{Username}\AppData\Roaming\Sublime Text 3\Local.
When I try to restore it by replacing the already existing Session.sublime_session while Sublime Text is closed, then opening Sublime Text, I see blank window.
EDIT: The Session.sublime_session old file I already have a copy elsewhere and I want to restore is ~5MB, when I replace the Session.sublime_session file in Local folder, and open Sublime (I see blank window as mentioned), then when I close, the Session.sublime_session file size gets decreased to ~74KB.
I’m sure that Session.sublime_session already contains content and is not corrupted.
How could I be able to make restore work?