Policy Portability from employer group insurance to retail plan

Hello Team,

I will be moving company and my existing company provides a group plan, during the course of my employment here I was diagnosed with renal issues and I underwent a renal transplant around 2.5 years ago. I am in the employment of the company for last more than 5 years. I now want that the benefit of this group policy gets ported to a retail plan. Can the Insurance company (Oriental Insurance) decline to port because of my PED, despite the fact that the PED was discovered during the policy period? Please help by providing a solution to it.