My original problem: Given I start with a brand new wallet, And I receive 1BTC to Address A, And I receive 0.08 BTC to Address B, And I have checked "Enable coin control features" in the options:
When I go to the send tab, And I click "Inputs" in the coin control section, And I check only Address B,
Then the "Amount" field on the Send page vanishes, and a non-editable Amount displays 0.08.
How do I send less than the full balance (say, 0.04 BTC) to Address C from Address B?
