Resolve 15 - Remote Grading loosing Grades

I am currently working on tamil feature film and using Resolve 14 for Remote grading entire film between US & Chennai, India. And successful in finishing the project and its in last stages of completion.

Upgraded to Resolve 15, found the following issues,

Camera Raw Metadata adjustments clip based after Database upgrade not updating.

Remote Grading often looses grades at both ends randomly.

System:
Both uses 8-Core ImacPro and Resolve 15beta...