It will go to Unclaimed Funds in New York State, held by the Comptroller.

No. The gift voids the provision in the will.

You can probate a copy if the attorney gives an affidavit he lost it.

You need to quickly bring a Supreme Court case with a notice of pendency against the property before it is transferred to a third party buyer for...

Don't sign anything and get an attorney.

Without seeing the document, based on your post, it sounds like it is proper.

It all turns on the terms of the will, and how much of the "deal" you thought you had is in writing.

It depends on the language of the trust. Generally, it will require the written consent of all trustees and beneficiaries.

Chertok is right. It is a simple transaction. With recording fees in Suffolk County included, and legal fees, should be under $1000 total.

Not without paying off the lien. The lien survives bankruptcy.