Roll back after upgrade on test server

I upgraded from 5.10.4 to 6.2 on the test server. I had a few issues with upgrade so I placed a ticket to Atlassian. They sent several things for me to change which only adds to the confusion. So what I decided to do was roll back to the original and make some notes with the new information they provided. So here is the question. Can I copy my database from Prod to Test and then copy my backup files of 5.10.4 over the current install directory and home directory? This seems like it should work. I want to get other points of view.