Back to Topic… I “misspoke” when I said the OP’s Elite Visa would be cancelled, it wouldn’t be valid for the duration of the DTV but when that finished they should still be able to use the remaining years on their Elite Visa.
E.g somebody has a 20 year Elite Visa, has used 1 year then gets a 5 year DTV, when the DTV finishes they should still have 14 years left on their Elite Visa.