Capacity planning CM01 - When you run capacity planning T-code: CM01, you found the plan orders are not included in the pegged requirement,you checked the profile, the check box for order and plan order are all actived.
Guess that planned orders have been created without capacity requirement indicator in MRP ("2" - Lead Time scheduling), if this is the case, then when converted to process orders they will have impact on the Resource. If you want to see them as planned orders, re-run the MRP or change in every planned order, going to the Menu: Edit --> Scheduling
Another couple of possibilities are to do with the routing/work centres used and whether it isactually calculates consumption of capacity of the category at the work centre being displayed in CM01 (it might consume a capacity pool or it might not consume the category).