Reconnecting solid pipe

Hi all,

when you make a solid pipe, it has a different icon into the model tree: a green hollow pipe.

If you change its trajectory and you regenarate the assembly also the solid pipe changes.

But if you delete, accidentally, the solid pipe, you cannot re-import the part with the link with the "pipe-centerline". Also the icon of the part is differet and egual to the standart part.prt.

Is there a manner to re-link the solid pipe?

Thanks

Bye