Ty Kdczim, dunno why I thought otherwise! Maybe from old rules ? But ty!
So if Germany conquers London and the IC had say 14 damage on it due to SBRs, once captured and the IC downgrades to a minor surely the damage downgrades also to the maximum of 6 at that time also or does it have to stay at 14?
6 is correct, as “Total damage to an industrial complex can’t exceed 20 for major and 6 for minor industrial complexes.”