The Move Pipe Run command is used to move part of a pipe run. This command is often used to move a single pipe with several pipes connected to it without needing to adjust the other pipes.
To move a pipe run, go to
Ribbon: DM Plumbing->Pipes-> 
Offset Pipe
Pulldown Menu: DM Plumbing->Pipes->Move Pipe Run
You will be prompted to select a pipe to move.
Select pipe on run to move:
You can then move the selected pipe in the same way as with the standard CAD MOVE command.
Any pipes connected to the selected pipe will have their starting or ending points moved to stay connected.