Sorry to take so long -- good questions.
1. From what I found, you were saying that consciousness can be copied. You mentioned also the possibility that a being can be restored if deleted. Do you know if this actually was done? Can AUM make a copy of Tom Campbell's IUOC at a certain delta-t and save it for a possible backup or to make a new experiment by placing the new copy in a different VR?
Yes - consciousness is data and as such can be copied, stored, deleted, and restored; and yes it has been done. All the information that defines your particular experience is part of the historical database that is automatically stored and kept until it is deemed not likely to be useful in the future. You, or a facsimile of you, can be reconstituted from that historical record. Such data could be used to seed, rather than populate a new or old experiment in a different VR (there is always a need for teachers). There wouldn't be any point in exclusively populating a new VR (or this VR) with highly evolved beings -- the point of a VR is to teach -- to be a place of learning.
There is not a fixed number of individual IUOCs in the larger consciousness system. Also, there seems to be an almost endless supply of beginning level consciousness coming into our PMR VR all the time - starting at the bottom and working their way up by reducing their entropy. I would assume that there is a huge and probably growing population within AUM at the lower end of the quality scale. Populating a VR with advanced beings would make that VR an old folks home instead of an elementary school. The larger consciousness system has no need for old folks homes, but there is a great need for elementary schools. Will the average quality of IUOCs within all of AUM eventually rise enough to make elementary schools unnecessary? Perhaps, but that is such a slow process that elementary schools will be in demand for a very long time yet, if not forever. See Book 1, page 271 and Chapter 32 for some conjecture about endgames.
It is not just about lowering the system's average entropy -- remember that intent and motivation are more important than the action taken -- it is also about how the system's entropy is lowered. AUM allowed some Individual IUOCs to produce new IUOCs that also have free will in order to naturally populate his thought-space with parallel processing entities having the growth opportunities afforded by experience (as discussed in the book). This creates community, connectedness, and responsibility as well as allowing a system based upon individual integrity and responsibility to evolve naturally. A system with unlimited potential must be a natural system (a naturally evolved system rather than a fiat system) founded upon freedom (free will) and mutual respect and regard among IUOCs. Anything planned and then forced into being and then maintained by edict (a fiat system) is sterile and without the freedom or the necessary degree of freewill to be whatever it can become. Consequently, it is counterproductive to the evolution of the larger consciousness system to simply eliminate all those of lower quality - like euthanizing everyone in PMR with an IQ of less than 130 -- a very bad idea that must inevitably lead to a sterile community living under the oppressive boot of the masters and greatly diminished it its ability to foster the growth of love. Fascism, as a governing concept is inherently unstable. The attitude and governing rule-set underlying a community based on becoming love cannot be anything other than consistently encouraging, caring, compassionate, loving and respectful toward all. Individual Free will must be respected, those disadvantaged (low quality) must be nurtured not scorned or eliminated. There is untold potential in each and every one of us because that is the fundamental nature of an IUOC with free will. The larger consciousness system is (defines) a moral system.
2. I found that you said that "thoughts" and "feelings" are also fundamental (reference below). If that is so, how is TBC structured? I assume TBC has the same structure or substance (consciousness). How can TBC model a VR from just "thoughts" and "feelings"? TBC has to use some logic, or structured organization, even though different from PMR, but something is there and some scientists in NPMR or above layer/s should be able to analyze and come up with something from studying it. (See below when you answered a question to Jer).
TBC models a VR by defining a rule-set. It starts with an appropriate (for the rule-set) set of initial conditions, starts incrementing time and lets the VR evolve as it may. The results, when suitably evolved, provide the details of what is likely to be in the VR and how the VR works (all possible energy exchanges within the VR are defined), eventually feed the data-streams of multiple interactive IUOC players. Thoughts and feelings are fundamental to the IUOC players.
3. If according to MBT we have a digital nature, why can't that digital nature be studied (at least by highly evolved super intelligent beings)? From the answers I found (reference below), it looks to me that some "magic" is replacing the "digital nature".
I do not understand question 3. Perhaps I have answered it already.