deleted contacts - restored from backup- can see their updated pics

Hi I am a newbie just have a few questions

I deleted someone as a contact

I recently did a restore from backup on my BB and see that they are on the contact list

If they do the same thing i assume that I will be back on theirs but we wont be able to communicate without one of us inviting the other

I still am able to see their profile picture changes. Can I assume that when I do an update they can also see mine?

If we have both restored from back up will the be able to see that I have restored them to my list?

Thanks!:confused:

Hi guys can anyone out there help with this please?

Still looking for an answer to this one...