Can some one tell me that if i run the new Boostcoin wallet software, i only get connection with nodes which have only the new blockchain on them. Are those nodes the only ones i get connected to, or do i also get connected to nodes with the old invalid blockchain.
Should i wait for the most important nodes to come online? Do i have to delete old nodes and add the new nodes which are up to date in the software of Boostcoin?

Could you tell me what the wise thing is to do Mammix2?