There are continual posts in the Boost deals about the pain, difficulties and the need for a blank SIM when porting from Telstra.
I just did the switch, no blank SIM was needed, no porting out to Aldi, and the process took about 10 minutes via chat.
Hopefully future porters have this joy but my take was it's no longer as hard as it once was. Although lots of things are like that ;-)
Cheers
did it a month ago.. was a nightmare
You may have gotten lucky.
Still better to port out and back in so you avoid all the issues