I've tried to unassign the connectors from the component, but it didn't worked. Then I made a totally new component, which is not assigned to anything in any way, but it didn't work that way either.
But the second solution you've described works, and it's still faster than defining each pin. I will try it in the 3D cabling, and if it works this way, I will mark your answer correct.
Thank you,
Lac