They all have access to your immigration details , previous visa details, refusals from USA and what not. They have access to five eye database sharing.
In any case they ask you to upload scanned copy of US visa on GCkey account or visa details on ircc portal.
Not just that but also for visas from other countries as well as any refusal stamps. Just create an account and follow the instructions
honestly, I'm asking, because I already applied about a week ago, and they asked me to upload my CAQ and study permit, as well as proof of enrolment for next semester as well as my university transcript which shows all my classes that i took for the last 4 semesters. I am hoping that is fine and enough as well as them having access to my previous applications and entries into Canada.
The only thing i regret not doing was including my expired TRV from my old passport, but I was worried it wouldn't make sense since the passport number is different on that one. Do you think IRCC would automatically know I've had an old visa and study permit by looking at my file.
Lastly, upon entry to Canada, it wasn't a computer log if I remember correctly, it was a stamp on my passport so I'm really praying they would process it fast and possibly put me on CAN+ processing.