My oldest Ikea unit is from 2007, it's moved 5 times since then, as solid now as the day I bought it, although that one is small enough to not have to dismantle.

I've got an ikea bed dismantled, moved, rebuilt 3 times no problem, and a bookcase with the same dismantle/rebuild process 4 times. My office desk is also on 4 moves over 10 years.