You appear to claim that these people were not killed.
In which case, it is for you to show where they went. To feed millions of people needs a lot of food. Europe was living on foreign aid, and food was rationed. Who issued the ration cards, and who delivered the food? Where did the food come from and who paid for it?
millions of people need a lot of clothes and other things. You have seen the heaps of clothes (and suitcases, and shoes, and false teeth, and spectacles, and even babies' potties) at the camps. With the factories in ruins, where do you think the replacements came from, and why is there no record of them?
To move millions of people needs lots of trains and ships. European rail network had been smashed, rolling stock destroyed, ships sunk, and the seas were under constant observation from planes and naval ships. How were millions of people moved with no records, and without being seen? Do you really think you could hide 11 million living people without them being noticed?
Millions of people take up a lot of room. Where do you claim they went, without being noticed?
Occams razor says they were dead. Why do you claim they were alive and what evidence supports your claim?
Prove where the equivalent population of Sweden went - without a trace.