I'm running Roots Magic 3 on Windows 7 and Windows XP (Virtual). In RM, click on File > Import. There are three options applicable to you - GEDCOM, FOW Database, FOW Backup. (Option 4 is PAF database.)
I've exported and imported GEDCOMs hundreds of times with no loss of data. But, I don't have any pictures. GEDCOMs don't do pictures well, from what I understand. I suspect backups don't either.