Comment by eastbound

You’ve just resolved a problem I had. I had this problem on a search engine, but I made it as a “v2”. And I told customers to switch to v2. And you know the v2 problem: Discrepancies that customers like. So both versions have fans, but we really need to pull the plug on v1. You’ve just solved it: I should have indexed even records with v1, odd records with v2. Then only I would know which engine was used.