I am also confused.
Can someone confirm me, do we need to it twice as mentioned here
https://www.alberta.ca/iqas-immigration.aspx
Applicant :
Complete application online and mail application package by post. Monitor delivery through courier.
IQAS :
IQAS sends you an email confirming we opened your package. Note: It takes time to process mail, so it could take a few weeks for IQAS to email you.
Applicant :
Request your official transcripts from your school.
IQAS :
IQAS emails you after receiving all transcripts.