The current act is literally the replacement to the War Measures act... and of course it has never been used before since it was only created during the Mulroney era partly because Pierre Eliott Trudeau abused the original one during the October crisis. Kind of a pattern here.

So yes technically it's not the war measures act anymore but if let's say there was a war, they'd enact the same emergency measures law. There is no seperate law for war iirc but at least we get to say that we technically aren't under martial law (because we renamed it)