Does syncing a telegram account with a phone with no contacts (recently reset to factory defaults) delete contacts from server?

Question

I am installing telegram on a new android device (sony xperia v, 4.3); The phone is reset to factory defaults with no contacts on it. If I sync the contacts with telegram account what happens? Does it transfer contacts FROM TELEGRAM SERVER and saves them TO THE PHONE? or stupidly does a one-way transfer FROM PHONE TO SERVER and DESTROY everything??

Its very important, because if it wont work I'll lose my only source of saved contacts(telegram server).

Thanks in advance

Answer 1

You will have all your telegram contacts in the telegram app wherever you login.