CHARLOTTE -- All you really need to see is this video, in which confused delegates boo about the convention chairman (Antonio Villaraigosa) pretending that the amendment passed, when it didn't.
The crazy upshot of this: The Obama administration doesn't actually agree with the new platform language! It reinstates the line that "Jerusalem is and will remain the capital of Israel." As the giddy, how-the-hell-did-we-luck-into-this Romney campaign points out, Obama has never said that Jerusalem is the capital of Israel. "Now is the time," says Romney spox Andrea Saul, "for President Obama to state in unequivocal terms whether or not he believes Jerusalem is Israel’s capital." An issue is created out of nothing, which... isn't what platforms, ideally, are supposed to do.