After changing pipe parameters, it is necessary to call the Update Routings command, since full model regeneration does not update the piping and fittings chain:
Icon  | 
Ribbon  | 
|---|---|
  | 
  | 
Keyboard  | 
Textual Menu  | 
<3PC>  | 
Tools > Routing > Update Routings  | 
The command is also available in contextual menu of 
 Pipe operation:
