You would expect oligarchs to know how to hide money by wire.
When courts have ordered DOGE to unfreeze money from various agencies they don't seem able to comply but say they have. So, where is the money? I'm just asking...The Panama Papers showed the myriad of hiding places for secret money. Maybe it's still in the US but encrypted.

The old saying 'follow the money' may not be as easy as it once was.
The first place to investigate is Elon's hackers.