Join Date: Oct 2007
Location: Home sweet home
Programs: AA, LH FTL, BA, US, DL, UA, AF, Hilton, Priority Pass, Priority Club
Posts: 298
Your miles will remain valid for 36 months after status loss. As for the e-vouchers, they will remain valid, but can only be used when booked in certain classes (Y, and B definitely, unsure about others, W and S class are non-upgradeable anyway).