It is.
This may come across as kind of a geekie lawyer-to-lawyer question for Monsieur Denis. If in a legal document we were to use the word “deemed” and say that something is deemed to have happened, normally that means that something that is X is actually deemed to be something that is other than X.
For example when it's 6:50 in the House, and we say that we shall see the clock at seven o'clock, we're deeming that. That's the way I understand “deem”.
Would that also be the normal usage of the word “deemed”?