I’ve asked that question, but it’s unclear. Some people may regain universal knowledge if it’s in their best interests or if they need it in place in order to fulfill their life plan. Yeshua came with His knowledge. The reason we leave behind that knowledge is so we can learn and experience things we need in order to evolve.

Before The Fall, people came to Earth with the knowledge intact, but knowing and experiencing things are very different at times. For example, you can know what hatred is, but that doesn’t mean you feel it or understand it unless you have that experience in some way. Because of The Fall, souls require more experience to go with the knowledge, so we don’t repeat past mistakes. Does that make sense?