Did God imply that He didn't know? Or was there another purpose for asking the question?
Right, so why not apply the same principle to verses you mention? Given that "know" has several meanings.
Deuteronomy 1:33 ... who went ahead of you on your journey, in fire by night and in a cloud by day, to search out places for you to camp and to show you the way you should go.
So then we should expect God to say "now I found a place for a camp"?
However, it is typical of OVT exegesis to believe the text as it reads in context, rather than having to explain things away as settled viewers are wont to do.
Here's some context:
Genesis 15:8-9 But Abram said, "O Sovereign Lord,
how can I know that I will gain possession of it?" So the Lord said to him, "Bring me a heifer, a goat and a ram, each three years old, along with a dove and a young pigeon."
So God's favor depends on God alone, and his blessing is dependent on him alone, so God knew here that he would bless Abraham, and also when he tested him.
No, it indicates an increase in relationship.
So then if God knows all about us right now, then that's more relationship that if God doesn't know as much?