Mr. Chairman, I just wanted to provide support for the ruling, which comes from the principle of relevance in the legislative process in the House of Commons, which says:
An amendment to a bill must be relevant in that it must always relate to the subject matter of the bill or to the clause thereof under consideration [in particular]. In the case of a bill referred to a committee after second reading, an amendment is inadmissible if it proposes to amend a statute that is not before the committee or a section of the parent Act, unless the latter is specifically amended by a clause of the bill.
I think that supports what you just did.