In your second question you asked if we will remember the earth, when in Vrindaban, and the answer is certainly. When Narada Muni was talking to Vyasadeva, as you may have read in first volume of our Srimad-Bhagavatam, he was in a spiritual body, but he remembered his previous life and explained it to Vyasadeva. In material life there is forgetfulness, but in spiritual life there is no forgetfulness.
Letter to Vrndavanesvari, 6 June, 1969