On a door built in this era, roller replacement is usually a contained job: release spring tension, pull the roller stems from the hinges one at a time, seat the new rollers, and recheck the track alignment before closing it back up. Because Rathdrum's stock is newer, we're not usually fighting rusted-solid hardware or tracks that have shifted over 50 years of settling - the kind of thing that turns a roller job into a bracket-and-track job on an older Coeur d'Alene house. That's the practical upside of newer construction.
The one thing that slows it down here is the same thing that causes the failure: cold-weather brittleness in the rollers themselves, which can make the old ones harder to pull clean without shedding plastic into the track. We clear that out before setting new rollers in, since leftover debris is what causes a new roller to wear unevenly within a year.