I am trying to plan for a physical server migration and have been testing the process to restore a confluence instance from a backup. The first step is to restore to the same version, the migrate to the next "recommended" version. I am able to get the very large backup file restored and get past some admin password issues so that I basically now have a clone. I now want to migrate to a newer version. I am currently at 4.2.13 and have tried to migrate to 5.10.9 (and eventually even higher). The migration install process completed without error, but once Confluence starts, I am not able to access via web browser. It just gives a blank page. Seems there have been other with similar results, but I haven't been able to find an answer that fixes this issue for me.