To Merge Invalid Nets
1. Click > 
Electrical Clearance. The Clearance and Creepage dialog box opens.
Electrical Clearance. The Clearance and Creepage dialog box opens.2. Click > . The Nets dialog box opens.
3. Select an invalid net from the list of nets.
4. Hold down CTRL and select a valid net from the list of nets.
5. Right-click on the selected nets. A shortcut menu appears.
6. Click Merge. The invalid net is merged into the valid net. After the two nets are merged:
◦ All the members of the invalid net become members of the valid net.
◦ The name of the invalid net is removed from the list of nets.