JOEL - Our scriptures say:
"Whatever principle of intelligence we attain unto in this life, it will rise with us in the resurrection. And if a person gains more knowledge and intelligence in this life through his diligence and obedience than another, he will have so much the advantage in the world to come." (D&C 130:18-19)

So we know that when we are resurrected we will take with us everything we have learned on earth. It is quite certain that when we die our spirits will also retain what we know, because God uses spirit servants from Paradise to preach the Gospel to the spirits in Spirit Prison (D&C 138: 29-32). How could they preach the gospel if they don't remember anything they learned about it in this life?

President George Q. Cannon said:
"We shall go from this condition of existence into the other sphere with the same feelings, to some extent at least, as we have here. If we have had knowledge, we shall have it there. There will be just as much distinction between spirits there as you find between spirits here. Those who have made good use of their opportunities here will have the benefit of their diligence and faithfulness there. Those who have been careless and indifferent and have not acquired knowledge and power through the exercise of faith will find themselves lacking there. Memory will be quickened to a wonderful extent. Every deed that we have done will be brought to our recollection. Every acquaintance made will be remembered. There will be no scenes or incidents in our lives that will be forgotten by us in the world to come." (Gospel Truth: Discourses and Writings of President George Q. Cannon, p. 60)

Not only will we remember what happened in this life we will remember what happened in the pre-earth life. President Cannon also said:

"You have heard of men who have been drowning or have fallen from a great height describe that in about a second or two every event of their lives passed before them like a panorama with the rapidity of lightning. This shows what power there is latent in the human mind, which, when quickened by the power of God, will make men and women recall not only that which pertains to this life, but our memories will stretch back to the life we had before we came here, with the associations we had with our Father and God and with those bright spirits that stand around His throne and with the righteous and holy ones." (Ibid.)