The problem is getting the Canadian shares transferred/assigned...

The problem is getting the Canadian shares transferred/assigned to your Australian CMC account without reams of paperwork and crippling middleman transfer/fees, and you will find that the Canadian and Australian exchanges do not play nice or even communicate with each-other. You could end up with worthless paper shares that you can't dispose of, or trade, or monetize in any way. Especially if your holding is small. Enjoy the paperwork and the fees and I mean paperwork, literally posting, international couriers and faxes with the Canadians - its almost like the internet and email were not invented when you are dealing with them..

Have a look at what the KLA shareholders went through in the forum over there.

https://hotcopper.com.au/threads/kla-and-agnico-merger-bad-deal-for-asx-investors.6431844/