Ipcc

i am afraid ur refistration to cpt is now invalid.....

A cpt registration is valid for 3 years and one can get this registration revalidate before the expiry of 3 years...

but since in your case 4 years have passed since ur cpt and its noe that you want to join again i think you would again have to apply for fresh registration.....

BUt i would suggest you to go for it even if it means giving cpt exam once again as ypu must have gathered a lot of courage and family support to continue from where you had left, so don't let your family down and go for it.