Correct me if I am wrong, I don't believe the source is the SSA. They don't have any interest in this. The source will be the instructions to form I-864W and the INA. Specifically, INA 213(a)(3)(b), which is referenced by I-864W instructions. Have you read the instructions? Did you understand the part where the instructions state: "You can acquire 40 qualifying quarters in the following ways: By being credited under section 213(a)(3)(b) of the Immigration and Nationality Act with quarters worked by your spouse during the marriage...?
Section 213(a)(3)(b):
(B) Qualifying quarters.-For purposes of this section, in determining the number of qualifying quarters of coverage under title II of the Social Security Act an alien shall be credited with-
(ii) all of the qualifying quarters worked by a spouse of such alien during their marriage and the alien remains married to such spouse or such spouse is deceased.
I wasn't trying to use the form because of anyone's "interpretation." I don't want any questions left unanswered as to which form I should file, which is one reason I joined this forum. Any posts I have made about I-864W have been to gain certainty. While I appreciate your responses, I wonder if you are just guessing on this subject.