Why old guides disagree
Older Demo discussions describe replacing or rerouting Haulers because individual removal was not convenient or available. Those posts explain the search demand, but they are historical context and should not override current Early Access behavior.
Current management path
Use Drone Admin or the Drone interface for individual Hauler management. Select the Hauler, review its assignment, then remove it when the unit is no longer needed or change its route when the destination is the real problem.
Route changes are related
If a Hauler takes the wrong route, route management can solve the problem without deletion. Keep removal and routing as separate actions so a replacement does not repeat the same mistake.