I know from experience that mods move threads to places they think are better or more appropriate, but they are human. And humans like being told privately about things, especially perceived errors. rather than having them made public. Again, they thought they were doing the right thing, so they didn't see it as a mistake on their part.
But I understand that's not our usual understanding of the "report" option. I know, however, again from experience, that the best way to get a mod's attention is to use that option!
At any rate, I'm glad you got your thread moved where you prefer.