Since the immigration computer snafu earlier this week, has anyone received their updated tm47 already acknowledged by Immigration office as received already?

No, and I did submit twice.  The second time worked. But if you go to the website, Click on "Check the Status of your application" if that is your concern.  If it shows it there, you can click and download a copy.

Thks, will give it a try later as it is showing the down for maintenance window again.  

I did one yesterday, approved within an hour.