Replaying Events Safely

Your marketplace's search index has a bug. For two weeks, the indexer split listing titles at every hyphen, so a search for "e-bike" finds nothing, and every one of the 4 million listings must be indexed again. The listings are all in the listing-events topic, which is compacted and keyed by listing ID, so it holds the latest event for every listing. Do you move the indexer's consumer group back to offset 0, or do you start a new group?

Both answers read the same events again