There isn't any associated balance to the address that i have in Receive tab. How to see it?
Anyway now it is just missing a transaction, the one underlined in red in my previous post.
Your procedure should be the best way to collect all addresses (including change ones) from the Bitcoin-Qt client.
...but it seems to skip something because it doesn't take over that transaction
PS: Have i to register one of the addresses on btcbalance?
EDIT: i solve the problem with pywallet. I follow the procedure you linked me last time:
And i obtained a file containing 110 private keys. I imported them to Electrum (about 10 private keys can't be imported, i don't know why), but the balance is still wrong and that transaction is still missing.
Why? Arghhhhhh
EDIT2: if i try to send a payment i get this message: "wallet not synchronized".
Anyway now it is just missing a transaction, the one underlined in red in my previous post.
Your procedure should be the best way to collect all addresses (including change ones) from the Bitcoin-Qt client.
...but it seems to skip something because it doesn't take over that transaction
PS: Have i to register one of the addresses on btcbalance?
EDIT: i solve the problem with pywallet. I follow the procedure you linked me last time:
In Bitcoin-qt you would only dump 1 key at a time. Use pywallet instead 
Install pywallet dependencies(see: https://github.com/jackjack-jj/pywallet)
Then:
Open your browser and navigate to localhost:8989
Search the dump keys part and write only "sec" on the export format. Choose a dir/file where to save the dumped private keys. You can then batch import them into Electrum.
Install pywallet dependencies(see: https://github.com/jackjack-jj/pywallet)
Then:
Code:
mkdir pywallet
cd pywallet
wget --output-document=pywallet.py https://raw.github.com/jackjack-jj/pywallet/master/pywallet.py
python pywallet.py --web
Next:cd pywallet
wget --output-document=pywallet.py https://raw.github.com/jackjack-jj/pywallet/master/pywallet.py
python pywallet.py --web
Open your browser and navigate to localhost:8989
Search the dump keys part and write only "sec" on the export format. Choose a dir/file where to save the dumped private keys. You can then batch import them into Electrum.
And i obtained a file containing 110 private keys. I imported them to Electrum (about 10 private keys can't be imported, i don't know why), but the balance is still wrong and that transaction is still missing.
Why? Arghhhhhh
EDIT2: if i try to send a payment i get this message: "wallet not synchronized".