actually,k i havent read the article but a book im reading right now has some information on that. the nazi's were supposed to have a thing called a V-2 which was a saucer shaped airplane. they were supposed to be built in antarctica but supposedly himmler sold the design to the americas to get out alive, as there has been multiple sightings of saucer shaped things in canada.

thers a lot more but i dont feel like writing. either way, you are right, the nazi's were supposed to have saucers, but not alien ones, just ones they developed. oh and they didnt keep them cause they were declared impractical. hope i could help