Axis & Allies Anniversary Edition: Errata wrote:
Q. If my capital is captured and I have unplaced units in the mobilization zone and/or technology researchers, what happens to them?
A. You lose them. Return any unmobilized units to your storage tray and discard any researcher tokens that you may have.
It makes sense to me that if a nation's capital is taken then any researcher tokens help by that nation are turned over to the captor. Is this a common house rule?