In the "Asset Manager" window, set the "Asset Bar" to "Display Menu of All Definitions"
https://www.sidefx.com/docs/houdini/ref/windows/optypemanager.html#configuration-tab
Operator Type Bar
Controls the visibility of the Operator Type Bar that appears at the top of Parameter dialogs. This bar shows the path to the HDA file that defines the node pointed to by the Parameter dialog.
The Operator Type Bar can be hidden completely, or it can be in a read-only mode where it simply displays the HDA path, or it can be in a mode where it presents a menu listing all HDAs that contain a definition for the asset.
You can then revert back to the previous definition of the sweep node if needed.