During face-to-face contact we disconnect the conscious. These memories are not recorded at all in your conscious, which is a different part of your brain from your subconscious. These avenues are readily used in humans, who have different parts in their brains due to the many genetic engineering projects done in the past, from many different gene pools. Humans have the capability to disconnect their conscious and subconscious memories, and quite frequently do so. For instance, if a memory is painful it can be forgotten. If a memory is painful it may also be altered, so that it is remembered in a different manner than the facts present. It is also possible for humans to develop conscious memories from subconscious desires, where day dreams are dwelt upon until there are enough details to constitute a conscious memory. However, in all these circumstances, the subconscious remembers the facts. It is the conscious which deals in falsehoods.
Subconscious memories of our face-to-face meetings are as effective as a full conscious memory. The distress a schism between the conscious and subconscious causes a human occurs when the human finds they just up and do something where they previously didn't know they had this intention. However, this type of behavior occurs in humans who don't have any contact with us, the Zetas, so it is not unique to contactees.