20 Pa.C.S. § 3329: Effect of revocation of letters, probate of will, later will or codicil.

No act of administration performed by a personal representative in good faith shall be impeached by the subsequent revocation of his letters or by the subsequent probate of a will, of a later will or of a codicil: Provided, That regardless of the good or bad faith of the personal representative, no person who deals in good faith with a duly qualified personal representative shall be prejudiced by the subsequent occurrence of any of these contingencies.