Vesting time in trading accounts

Hi,
as I’m rather newbye to NEM, I would ask about
clarifications of real use case.
I bought XEM from Poloniex, then the transaction
ended to my Poloniex account key.
As I’m setting up my wallet in a VPS I will have
later to transfer from Poloniex to VPS.
The question is: do vesting restarts from scratch?
I wonder why, I mean, it is still me. The transaction
is just between two of my owned wallets.

that is u who know that addresses belong to the same person

the blockchain dont know it

thats a normal mechanism that vesting start form zero for all coins involved in a transaction

even if u send between two addresses that u run in same wallet

because for the blockchain something called a wallet doesnt exist

it only works with addresses

that some users have many addresses in one wallet is invisible to the blockchain

and its good this way

this is a major part in anonymity that blockchain give to its users

like a 100$ note dont tell what other notes u had in ur wallet when u spend it

Would it be possible to let NEM blockchain know about
"my addresses" with the multisignature feature?