AEM certificate renewal

Hi Team,

I had completed my certification in Adobe Certified Expert - Adobe Experience Manager Sites Developer (Adobe Experience Manager) from my previous organization. That time I logged in to the portal with organization's id . Now  I switched to another organisation and I am unable to get my certification from current organization's id . 
May I know how can we transfer certifactions from one organsation to another organisation? My certifcate has expired and I want to renew the certificate for that I have to give certification re-newal exam but I don't have old certification details because of login issue. 

Kindly help me to resolve this issue .