Upgrade to 6.8.1

I am now running 6.6.2. Is there anything I need to be aware of when upgrading to 6.8.1. Can I just copy my AgOpenGPS folder to use with 6.8.1. Will my sections turn on and off the same? Has this all been explained before and I missed it? Right now I have 6.8.1 running on a separate tablet. When I copy my fields folder to the AgOpenGPS data folder on the new tablet and open a field I get a flashing double line running to the upper left corner of the screen.