Does switching to imperial make any difference to power to weight ratio?

I have tried searching for an answer to this question but haven’t found anything.

Ahead of a race today, I switched to imperial measurement because my rounded up kilogram weight (xx.6kg) equated to 1 pound more than I actually weigh in lb.

I know that we are talking very small margins here, but does anyone know if that will have made any difference to my power to weight ratio, or will the Zwift algorithm have converted my lb weight to the nearest round kilogram weight?