Commit: f750ae4cf45468145341ef3050c1a5c7b09960d4
Base: 70e5e384da
Environment: Linux server, real web dev app localhost:6044, T3 Browser panel 1280x800.
Command: vp run dev --no-seed in /home/ubuntu/wt/issue-17484.
State: stopped prior dev server; moved only worktree .t3/userdata/statev2.sqlite(-wal/-shm) aside; fresh DB migrations.
Identical fixture files reused: /tmp/issue-17484-fixture/codex/sessions/2026/10/21/rollout-{0,1,2,3}.jsonl
Same project path: /tmp/issue-17484-fixture/project
Newest-first counts: 20000,20000,20000,58000; total118000. No fixture records changed.
Steps: /welcome -> Continue -> Continue -> Other folders.
Observed discovery: project, 4 conversations.
Select all -> Import 1 project, once.
Observed completion: Imported 4 threads. No 'Some history was not imported' warning.
Read-only SQLite query:
select title from orchestration_v2_projection_threads where title like 'Fixture%';
Fixture conversation 1 (20000 records)
Fixture conversation 2 (20000 records)
Fixture conversation 3 (20000 records)
Fixture conversation 4 (58000 records)
Result: fresh first import persists all four sessions. No retry.