Nominee has right to get clain after second marriage.

1. A nomination does not lay down any special rule of succession of a deceased person overriding the general rules of inheritance prescribed by the personal law of the deceased person.

Ref.: Sarbati Devi vs. Usha Devi [AIR 1984 SC 346]
{Though I would rather like this citation to be reconsidered by Hon'ble Bench which is other pending interest matter but since you asked and to give you basics one must read it}.

[Last reply]

You have posted a similar query at:

https://www.lawyersclubindia.com/forum/Policy-claim-to-nominee-after-nominee-marriage--123642.asp

and the query was responded.

Nominee can file the deceased claim.

Nominee is just the hand to receive the proceeds and has to pass on the proceeds to legal successors/heirs.