It doesn't seem like anything has been changed back to highway=trunk.

I have left a changeset comment on the user who changed it to motorway.

I agree that it should be left as highway=trunk, because Hwy 35/115 from Hwy 401 to Hwy 35 is NOT a controlled-access freeway and it has access to businesses and driveways. Even though the wiki states that some limited-access expressways may be classified as highway=motorway, in Ontario, generally RIRO expressways are highway=trunk. See Hwy 11 as an example, where there are some trunk sections and some motorway sections.