Hi, I live in the US and my default accounts are US based.
I do have a RBC canadian bank account (checking + Mortgage). Quicken Classic would let me connect to it automatically via One Step Update, but it won't pull any transaction from the checking account, just one final balance.
For the mortgage account (which is via the same online banking log in), it marks my mortgage as "fully paid off", which isn't the case.
Interestingly, with the multiple times I've deleted, re-added these accounts, there was one time it correctly pull all transactions for the checking account and the correct mortgage amount. But I had to delete it back then becuase I didn't know how to use multiple currencies (now I do). But since then, I only run into the issue described above.