It's likely that there are interactions, but there isn't much information on the subject. This is info I found on it:
EDIT: There is also this:
Quote:"M: So as Earth goes into fourth density, or green, the actual mineral expression which is normally first density—is the spiritual entity of the planet, being mineral essentially, first density or fourth? Or do they co-exist?
I am Latwii. Not only do they co-exist, but you have first, second, and fourth; the third density, at some point in your future, will cease being active. However, in the long run you have each density occurring concurrently, so that the planetary sphere has first, second, third, fourth, fifth, sixth and seventh. This is the mature planetary system of bodies. One is not discarded when another is activated; each functions concurrently with the others.
This is a difficult subject, for the mind perhaps is attempting to rationalize whether the second-density tree at third density is the same second-density tree in fourth density. Yes, my brother, it is the same tree, but in the fourth density of vibration it will [have] slightly different characteristics and will be able to have a more conscious relationship with the fourth-density being, for instance, being able to communicate the simple second-density feelings to the fourth-density entity. It remains the same tree, but as each density observes it, it grows in its ability to be understood in its essence."[August 16, 1981]
EDIT: There is also this:
Quote: "19.5 Questioner: When the first second-density entities became third on this planet, was this with the help of the transfer of beings from Mars, or were there second-density entities that evolved into third density with no outside influence?
Ra: I am Ra. There were some second-density entities which made the graduation into third density with no outside stimulus but only the efficient use of experience.
Others of your planetary second density joined the third-density cycle due to harvesting efforts by the same sort of sending of vibratory aid as those of the Confederation send you now. This communication was, however, telepathic rather than telepathic/vocal or telepathic/written due to the nature of second-density beings.
19.6 Questioner: Who sent the aid to the second-density beings?
Ra: I am Ra. We call ourselves the Confederation of Planets in the Service of the Infinite Creator. This is a simplification in order to ease the difficulty of understanding among your people. We hesitate to use the term, sound vibration, “understanding,” but it is closest to our meaning.
19.7 Questioner: Then the Confederation also aided in second density to third density transition. Is this correct?
Ra: I am Ra. We must qualify correctness of this query. A portion of the Confederation which is not working with third density but finds its aid best used in other harvests— that is the second-density harvest— is responsible for aid in these harvests. The Confederation, as we have stated previously in these sessions, is composed of many of those in other densities, in your own density, within your planetary sphere, and within the inner or angelic realms. Each of those entities developing a mind/body/spirit complex, and then developing a social memory complex, and then dedicating this social memory complex to the singular service to the One Creator, may join the Confederation."