Yeah its not using Retroarch, like i anticipated, you either imported without a emulator attached, or you were using another emulator that you then deleted, so the games do not know to use retroarch.
Click a platform on the left then on a game in that platform, use CTRL A to highlite all the games in that platform, right click one and choose edit, this will open the bulk edit wizard. Click next then in the first dropdown choose emulator, then in the second that appears Retroarch, finish out the wizard. You will need to do this for all systems you want to use retroacrh for.