Upgrading: Didn't Get to Export Preferences

I was a Scrivener 3 beta tester but missed the March 20 deadline for running the last beta and exporting my preferences. Is there a way to recover them before I install the official release? FWIW I have S3 on my Mac – can I export preferences from there?

Preferences are not portable across different platforms (e.g. from Windows to Mac or vice versa.)

You can temporarily set your system clock back to a date before the expiration date, start the Scrivener beta, save your prefs, close Scrivener, then reset the system clock.

Of course – thank you!