Is it asking too much?
Well yes actually.
And if there were technical problems, what technical problem would that be, which wouldn't effect the rest of the block or couldn't be fixed easily?
I've moved a lot of sites between servers and databases, yes some bigger, never had this issue or an issue which couldn't be resolved fairly easily.
And I reported the problem, but my posts keep getting moved to forums where they can't be seen, this is the next problem.