Restoring the fences in front of village houses that had quietly disappeared
While I reran the plaza rebuild several times, the group of fences in front of the houses, sitting at the origin, got deleted entirely. I copied the fences back from a backup scene and changed the delete condition from a name list to a rule.
I noticed all the fences around the houses had disappeared. This was after I'd run the plaza rebuild several times while redoing the market stalls since 157.
Screens I built
I brought over the house fence group from a backup scene as is. Regenerating it could change the layout to avoid the new NPC spots, so I went with copying instead of generating. Comparing against the backup, this fence group was the only thing missing.
Noel's stall was standing on the north roadside fence line, so I removed just the two overlapping sections and made the stall sit in a gap in the fence (96 sections → 94). Regeneration also leaves a gap the length of the stall. Fence/NPC overlaps are 0, and paths connect from the end of the bridge to all 12 NPCs and the 3 doors.
Rabbit hole: the whole fence group got deleted
The plaza rebuild deletes props whose coordinates fall inside the plaza. Groups at the origin (0, 0, 0) count as inside the plaza too, and the other groups were excluded by name, but the fence group was missing from that list.
I replaced the name list with a rule: of the groups at the origin that have children, only the plaza group gets deleted. Groups I add in the future won't get wiped either.