Disconnect columns automatically from "Beams with external fixity"

In versions earlier than the 2020.f version, if the path of walls that were being entered, using the "Beams/Walls > Define beam > Beams with external fixity" option, coincided with any columns, users would have to disconnect them so the vertical movement of the columns would not be hindered by the walls. Now, in the 2020.f version, columns are disconnected automatically when these beams are entered (wall supports or fixed).