Your net worth went up and your qualifying income went to zero.
Retirement, a business sale or a portfolio built over decades all produce the same result in an underwriting system with no field for wealth. Asset based programs exist for exactly that file.
Qualifying assets divided by 84 months.
That is the mechanic. The complication is that "qualifying assets" is not your balance: checking and savings count at 100%, stocks, bonds and mutual funds at 80%, vested retirement at 70%, and cryptocurrency at 60%. Money used for closing comes out before any of it is calculated.
Two programs, two different tests.
Asset depletion converts assets to income and runs a debt-to-income ratio. Asset qualifier subtracts your monthly debt and tests the residual against a floor. A file that fails one frequently clears the other, and most lenders run only one.