Since 1.4 was released, I've had objectives reset twice. Once I was half way to 250 weapons collected and then 10 of 30 files extinguished. When it happens, all objectives go to zero.

I'm on a Droid Turbo 2, Android version 5.1.1. I updated to 1.4 from 1.3 (but did a clean install on my new phone for 1.3). It was a manual update.