You do not have to notify previous proxies signers or holders.
The new one automatically voids the old. If they are your current healthcare provider, just a new DPA is necessary not a statement voiding the old.
Also with the proxies on the old don't need to be notified, the new one wil void the old.
If you are a fader like me, telling the congregation to void the document or telling the JW proxy to void it might send up a red flag. I doubled checked with 2 lawyers in this state.
But I have decided to send a general statement to the ones who signed my old one and to have the congregation destroy the one they might have on hand, basically to the effect that I have had a new one drawn up and that they should destroy the old just to be on the safe side without going into any detail.
Blondie