A seizure of funds is certainly not the first step of bankruptcy proceedings. SBF seems to have "fled" to the Bahamas, and he would obviously have the access needed to make the transfer. And as the article says, the Bahamas are trying to get the US Chapter 11 proceedings thrown out arguing their own bankruptcy proceedings have priority. There was also the mystery texts from SBF arguing "Chapter 11 was my biggest mistake" and "trying to resolve a jurisdictional issue with Delaware".