Reattach existing node

[m.kopaniaAQZ65]

Is it possible to reattach elements that are connected already to one node, to another, like on the picture?
I would like to reattach all this strings from wall type to floor typy without doing it manualy.

[chuongmep]

Use Shift keyboard with left mouse

[m.kopaniaAQZ65]

Thanks a lot, I thought that it will be so simple