They certainly didnt witnessed their deaths, thats for sure, since all the operation was done behind closed doors, as by the so called “holocaust survivors” testimony. Also they probably didnt thought to change the Almanac for their benefit because they thought that no one would check that in the first place, or because there was no way to hide that large amount of a number.
Also, only a selected few “survivors” were sent to make public testimonies, the others were given a sum to stay quiet and live a luxurious life in Israel… that is already known… Why would they give any air time to jews that “survived” that and told the truth in the first place? They were collecting the spoils of war after germany was destroyed.
But im curious to know now.. what did your family “saw” exactly? And i dont want blunt estimates.. i want sharp details.