I took a look and and far as i could tell it looked like you got the money, you sold it before the game processed the month, so your cash jump would have shown up under August. Looks like more than you made was spent before the next month tho. Can't tell on what tho, maybe military assets?
Might be wrong, I know my CEO on LU doesnt show process till about the 5th of the month show if i would have sold something on Aug 2nd it show up under August and not September.