Extended modules > Creo Elements/Direct Mold Base > Tools > Freeze part
  
Freeze part
This is to disconnect parts, so that the Creo Elements/Direct Mold Base does not take them into account.
Click Mold Base and then, in the Tools group, click Freeze Part. The Freeze Part dialog box opens.
Part: Select part to be disconnected.
Freeze: Mark to disconnect or unmark to connect.