Originally Posted by dddd

I could see why someone would change it to what you have there.

The original small ring that went with your big ring would have been 42t, and less round than your big ring, so perhaps that's why it was replaced with a round one.
Downshifting to a less-round ring can be very annoying at the higher cadences of fast riding, but upshifting to the rounder (only 3.5% variation) BioPace big ring might actually make the upshift from your round small ring seem easier.