This summary is not the rule. The rule text controls.
When a judge holds a pretrial conference, the court will write up an order that spells out what was decided during that meeting. This order becomes the roadmap for how the case moves forward from that point on.
Once the order is in place, it sticks. The case has to follow what the order says unless a judge later changes it with a new order. This keeps things organized and stops people from ignoring what was agreed to earlier.
There's an extra layer of protection for orders that come after the final pretrial conference, the one held right before trial. Once that final order is entered, it can only be changed if someone shows a good reason for the change. This makes sense because the final pretrial conference usually locks in things like the witnesses, evidence, and legal issues that will be presented at trial. Courts want to keep last-minute changes to a minimum so that everyone can properly prepare for trial and avoid unfair surprises.