No, you can't simple just move files from vROps 6.7 to vROps 8.1. A lot has changed in the meanwhile.
What is your reason to build a new environment and not upgrade 6.7?
In short what I would do:
Check upgrade path -> VMware Product Interoperability Matrices
Run upgrade assessment -> VMware Knowledge Base
Bring vROps offline
Bring vROps online
Install the upgrade pak files (based on the upgrade path from step 1)
Verify your endpoints.
Because the first setup needs to be redesign so i want to get the data/ settings or analytic data from the old and move it to the new one that im going to build. Is it possible?
As stated you cant just copy data between vrops versions.
You have two options
vmware does not support the migration of analytic/historical data between vrops instances regardless of source and target version as far as i am aware