Adress old wallet?

dear ada fans,
still a small question in my brains
1.generated adress to buy coins ada on 0.15.0 wallet
2.sync new mainnet 1.0.0 all good balance&history mainnet not showing the adress generated on 0.15.0
4 why not showing??? must take everything from old wallet to new 1.0.0
you see its small question
ps:new 1.0.0 is soooo damm fast with sync i love it great work ada&charles hoskinson cant wait for shelly and smartcontracts.
happy ada holdings fans