Yes it is very possible his bones were moved to argentina maybe because he had an affair or he was in love with the land. But he was the first person to be able to invade this much land in 2000th century. So obviously he would have had many many secret plans. Like the movie dictator any dictator would have a had a body double. Its not just safe but effective to disappear and start a life with money rich and a clean record.
There are several statements that hitler didn't die in his bunker, but a body double did. There is this theory that Hitler actually left Germany (before the americans got to him) and fled to Argentina were he lived the rest of his life until he died. Also this is a theory that was later investigated but I don't have the detail on the investigation.