The information is there. That information can’t be forgotten. I think about it. If you have information in your knowledge bank you can’t forget it. There are places in the mind that can store information, new information that you could recover in future, trust your memories you have, your perfect memories now. Information in a long time in memory is suppressed. This is the reason that you can’t recover it and there are several reasons why this information is suppressed. One is there could be an emotional pain blocking that information. If there are some type of pain associate with an event they refeel that pain.