When opening a session, if some assets cannot be found, Audition can locate them. But the window is missing a 'Skip' button to skip files you don't know where to find.

If, say, you cannot locate a certain file, you have to cancel the rest as well and locate them later manually.

In the same window, there is a button to 'Copy Warnings/Errors of All Files', which copies the warning message itself to the clipboard. The only data this message contains is the path of the session file you are trying to open. A better use for this button would be to (also) copy the original paths of the files Audition cannot find.