BOI wont release the policy until their mortgage is paid off in full and NIB wont issue the new mortgage to repay BOI until they have adequate mortgage protection assigned. If you are reassigning an existing policy then your solicitor will have to issue an undertaking stating they will reassign the policy to NIB upon redemption of the BOI mortgage. You will have to contact your broker and request a letter from the life assurance agency confirming that the policy is paid up to date, the term remaining and the policy amount as NIB will require confirmation that on reassignment the policy has adequate cover.