Yes, I've noticed that I couldn't seem to find anything, but I don't think that I've ever been able to find anything
I recall starting a new base and being just over the B-Limit, got an extra drone in one of my earlier bases. Then, I happened to lose the base to MWs, but the B-Drone didn't go away (I'm pretty sure that it didn't get subtracted anywhere else either). Later, I built a new base on the very same site (the 1st new base since the MWs struck), but that one did not trigger any more extra drones (I would have been really mad if it had!); of course, Ned's theory would not necessarily require an extra drone for each new base, so maybe I wouldn't have gotten an extra drone on the next base if I still had the original. Naturally, I didn't analyze the situation in Ned's detail, so I don't know whether or not the situation had self-corrected or if I was still carrying around an extra drone from then on but I definitely didn't lose the original extra drone when the base that triggered it went away.