Ok. I have a city, and some of the buildings are around 200-275, however I would like to tear em all down and put in 300's. If I tear down the HQ, will all the buildings disappear? And if I tear down the HQ, will I have to buy the land again or will it just give me 24 hours to put up another one?

Also can the HSR Compressed Regenerating Bioplate be any ql to go with a ql 300 Generic Organic Immunity System ?

Moreso, can everything else be any ql and still go with the ql 300 generic organic immunity system?

Can the serum for Satellite Uplink, ECM Tower, and the whompas be any ql?