Hi, may I ask if this is still being looked at? I’m trying to do the same thing, but when you have a merged collection you can’t manually sort them by the order they’re listed. It kind of works, but if you have a playlist with roms from different collections via .sub files it will split them instead of sorting them all together by how they’re listed in the sub files. It works if you sort them alphabetically, but not by manual sort (the order they’re listed in the sub or playlist files).