I’m having this trouble too. I can get the arcade and FBA and even Game Boy color art and descriptions to show but not any of the other systems. I am using a fresh 3.6 install. My other card which was 3.5 and then updated to 3.6 within emulationstation has kept these descriptions. Has the place where the scraper configs changed in the 3.6 image?
OK, I figured it out. When I transfered the gamelist folder to the fresh 3.6 install, it never saved. It always rewrote back to default. I quit emulationstation into the command prompt. THEN I ftp’ed the gamelist folder over to the appropriate location (same folder as downloaded_images) and rebooted the system. I went into my system and bam! my previous scraped gamelist and images where there. So I guess emulationstation cant be running when transferring you gamelist folder. I could have though it used to tho.