Happened to me, 3 days ago - deleted some tests and flipped assertions after outlining that it wasn't to change any assertions.
Our team was doing a similar task to move between test frameworks, and I had to do a git diff of hundreds of thousands of lines to try and work out where a test had disappeared to.
You are the one ruining this discussion, it's worrying that you don't even realize it. I pointed out that models change quite a bit over time (I said more than that) and you ridicule my reply. "Your fault. You should have used a model from 0.000005 seconds ago!"
Our team was doing a similar task to move between test frameworks, and I had to do a git diff of hundreds of thousands of lines to try and work out where a test had disappeared to.