transistors - Why does the collector current direction remain the same in saturation and active region?

The collector current direction remains same in both active and saturation state where the former puts the base collector junction reverse biased and the latter puts the base collector junction forward biased. How is it possible?

Question inspired from https://www.quora.com/Why-do-collector-current-flows-from-collector-to-the-base-even-in-transistor-in-saturation-state-when-the-base-collector-junction-is-forward-biased