[Tweakhead]

yes, mine is usually engaged.
I rarely use Beat Detective either these days. I prefer my own sample accurate ID'ing of points. Once fully mapped, it seems sensible for the tempo changes to be happening dead on the Bar, unless there's a deliberate accelerando etc on beats.
I'm glad this worked out for you. It was an educational process for me too, to track down the cause. The screenshots helped immensely. Well done for your perseverance !