The edge connectors are particularly troublesome and those are present in almost all their furniture making it next to impossible to disassemble a piece of furniture to move it to a new house. They are designed to be single use.
Well, lucky you. I've had those 'cam lock nuts' break loose on first assembly (so not even when disassembling to move them), and I'm plenty careful and have lots of experience when it comes to mechanics. The basic problem is this: You are supposed to put a very short screw into a bunch of glued together particle board fibers at a ninety degree angle, and then the cam lock will pull on that link to create the desired connection. So you're pulling with considerable force on a 5 mm screw thread into particle board. That's entirely the wrong way to connect particle board, it is borderline strong enough for that first assembly but if you ever take that piece of furniture apart the fibers will be pretty much destroyed the second time you drive the screw in, and anybody who has tried to move the pieces with those screws sticking out more than likely ended up repairing things in creative ways because they will break off when you look at them cross eyed so forget about moving them around.
Altogether this is one of the worst things about Ikea furniture, that and the over reliance on honeycomb cardboard filled surfaces making solid looking sidewalls anything but.
Perhaps it's a bigger problem if you try to move out of historic house with winding narrow stairs. Just moved houses here without disassembling anything but the largest pieces like sofa sets. All my furniture including IKEA pieces made it just fine.
