Guild Wars 2

Sorry if this was mentioned somewhere but I could not find it and in the last livestreams all was mentioned that it would take about 9 month to build all stuff in the new guildhall
So my question is what from the old guild system wil transfer into the new guildhall
do we really loose all our upgrades like guild bank, guild missions and wvw upgrades ?
what has to be spent/used bevor HoT so it is not lost due to the conversion to guildhalls

Guild missions will no longer need building to unlock, so those, at least the ones we have, we still have access too. The guild buffs will be replaced by a different type of buff and those we won’t be able to use as easily. We’ll still have access to the banners, at least until we run out of influence. In addition, a small amount of influence can be transferred each day to the new currency.

I’d really like to know some more details about what is going to be transferred to the new guild halls too. Like if I have unlocked tier 4 of Art of War, does that (or equivalent) stay unlocked in the new guild hall system? At the moment I have level 3 unlocked and don’t know whether I should use the influence to unlock level 4 just now, or will that be a waste of influence because maybe in the new system I’ll have to start from scratch again anyway?
Also, if I already have things like Guild Armorer/Weapons Contract unlocked, will that transfer across to the new system or will I have to start again from scratch and build/buy those upgrades?
Is there any advantage to using influence to unlock further levels of politics/economy/architecture/art of war before HoT, or is it only consumables such as banners that will be carrying forward? I wish we had more specific details about exactly what is being ‘grandfathered’ in.

Ok so Bounty Training for example is something that will not be useable anymore when HoT starts ?