I am struggling with this same issue.

We have 1000s of USD transactions in our Canadian QB account monthly. QB finds the transaction but forced you to click 'match' for each one. You cannot select all. QBO is slow and each transaction takes 5-10 seconds for the page to refresh.

Just awful. 

The currency value is already on the bill and there is no logical reason we need to click on each transaction to 'match' them. It is tedious and mind-numbing work. 

Why can't the bulk accept button just work? This really is a ridiculous limitation