When you export leads from Discover, they move to Monitor. This is by design.
Discover shows AI-recommended leads that haven't entered your pipeline yet.
Monitor shows leads your organization is tracking — imported from a file, synced via Zapier, or exported from Discover.
Once you export a lead, it's part of your pipeline, so it moves to Monitor. Discover then fills in with new recommendations.
In short: exported leads aren't lost — check Monitor to find them. Keep exporting from Discover to get fresh leads.