Try not to doublepost in 2 forums, specially when they're exactly the same post, k?
1) The only reason not to do so from the beginning is that, with only BG2 installed, you can combine a ring/cloak/ammy of protection +2 with red dragon scale for a potent combo. This has been removed in ToB.
2)No. The only one is that, if you started the Watcher's Keep quest in SoA, you can continue in ToB. Otherwise all quests including strongholds are gone.
3)I think you're talking about BG1, if Sarevok. In any case, import the final save. If you're going SoA --> ToB, then you'll just continue automatically.
4)If you're loading BG1 --> BG2, then all your items get wiped out, xcept if you use one of the techniques listed
in this post.
Hope this helps. [img]smile.gif[/img]