Not totally true! While in HK you are part of VETA. Should you switch basing companies (ie. go to USAB) the portion already invested becomes fully invested! The reverse is also true.
New freighter DEFO on a LAX (USAB) base. Does his 3.5/4 years then decides to go to HKG (VETA). The 4 years of accumulated PF will be fully vested and further contributions will be 4/10th vested then 5/10th the following year etc. In year 7 he decides to move back to the US and takes a SFO (USAB) base. All 7 years will be vested and further contributions will be 7/10th then 8/10th etc until 10 years.
If you have a few years in then change basing companies 6 months before you quit!
