The menu Run intercompany master planning is not supported by Planning optimization.

It would optimize MRP runs when customer has lots of items (80,000) and several companies (7).

The Run intercompany master planning with Number of iterations = 2 is required so that delays from the source company can be seen in the downstream company. Without this option it is difficult to ensure all master plans are sequenced correctly, runs without time loss, and results are consistent across all legal entities.

As Planning optimization is supposed to replace the built-in MRP engine it should at least not deprecate existing features (other bad news with Planning Optimization are: the absence of pegging for safety stock and the fact it doesn't take into account sales forecasts on current day)...