Was a time some Countries, ( can only speak for US ) accepted a form from you attesting to monthly income then notarized. I used for 10 years, then they stopped.
I now get monthly statement printed every year showing a monthly income, and it's accepted with bank letter. Pain in the ass, but....its what they want. You can have it sent FTT to satisfy IO, then wire what you don't need back. That was true for US until 8 or 10 years ago, but Consul stopped issuing. Some countries still do.
But stuck with your bank showing overseas transfers.
depends on method of qualifications...income, no funds nested, just bank letter and statement of meeting income requirement. Some provinces let you offset less monthly wi a nesting combined to meet 800k yr.