In 1 Thessalonians chapter 4 Paul talks about people who have ‘fallen asleep’. This means people who have died but, since they will be resurrected in the future, this is described as being a sleep. His words were a message of support and consolation to Christians whose friends and loved ones had died, and so he speaks of a kind of re-union when Jesus returns:
For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord. Therefore encourage one another with these words. 1Thess. 4:16-18
There is no reason therefore to think that we won’t remember people from our present life. In fact, remembering where we have come from will probably be an important part of the Kingdom. The prophet Zechariah talks about the Feast of Booths (or Feast of Tabernacles) being celebrated in the Kingdom age (see ch 14 v 16-18). This festival was all about the nation of Israel looking back upon their journey through the wilderness, a journey that is also a metaphor for our travels through this present life — so it is likely that people will remember their past, including their friends and families, when they are in the Kingdom.