AddPickupAndDelivery behavior shift

[braktar]

The behavior of AddPickupAndDelivery has changed between version 7.0 and 7.3+

It was until now pretty efficient to add this indicator to the model in order to ease the solve with node relations of the following type:

• same vehicle
• order (same route, nodes must be in the given order, but other nodes can be inserted between)
• sequence (same route, nodes must be in the given order and other nodes cannot be inserted between).

But now, it generates SegFaults... Is this behavior change expected?
Btw, here is a sample test case defining the order relation to keep track of it.