Hey aspirant,

No, it is not possible to get transfer certificate after 6 years of gap after discontinuing your studies. For every course, there is minimum and maximum duration.But, still if you want to continue your studies after a long gap then you can give it a try after contacting to your Institute. Write an application to them mentioning your query. Maybe after seeing your query they may give you a form to fill for your trasfer certificate.

Hope it helps.

good luck.