Faction Core Upgrades persist even after core picked up or destroyed

If you upgrade the TNT bank (likely the spawner bank too), and pick up your core (or likely if destroyed), your spawner upgrades remain intact and will still be there if you re-place your core. Not sure if this is a bug, but reporting as "Major" as it means that the ONLY penalties to picking up your core (if you're being raided/go offline) are having to take your TNT out of the core, having to take your spawners out of the core, and losing some of the unspent money in your core (withdrawal restrictions), something you would only care about if you're going for F top bank value. Not sure if other changes have been made next season to deal with the issue of picking up cores while going offline/being raided, but this is a concern in the context of current core mechanics