Need Help With This File?

Would someone have time to take a peak at this file, and advise me how/why it stops between Frames 50 and 140? I’m trying to learn to use .mdd files and Mesh Cache modifiers, and I’m afraid I’ve gotten over my head again! Blend File

Thanks!!

I’m wondering if this is a 2.82 bug? It’s losing animation when shape keys applied, and I’ve read similar inquiries other places, with no answers??