Mynumber/ health insurance card

So when I first move to Osaka in December I got a paper health insurance card from the ward office. Then I received my mynumber card later. I applied so that my health insurance card is also my mynumber card. I confirmed via mynumber portal website and it says. マイナンバーカードの健康保険証利用 利用登録状況 – 登録済. Is my paper health insurance crd still valid? Since my mynumber card doubles as the health insurance card can I just throw away the paper card I was given originally?

by Lalapazaza_