[neronimo]

Thank you for your replies. I didn't realise that OTM actually unassigned all the orders in the bundle and replanned the remaining ones. That's most certainly what's causing the problem since by the time the orders are unassigned, the delivery date/time is not feasible (as often in the past), therefore the remaining orders fail to plan.

By default, all my orders come with a date emphasis of "BOTH", so it looks like I will have to change the date emphasis on all the remaining orders in the bundle in order for it to work.

Thanks.