RetroFE reads from the meta.db directly while running and is found on the root folder of the program. The meta.db is built and updated through the use of two folders found in the meta folder called hyperlist and mamelist. When RetroFE loads it will check the meta/hyperlist and meta/mamelist folders for any updates to the meta.db.
I dont know about the mamelist xmls but the hyperlist xmls are the same used by hyperspin and rocketlauncher in format. While the folder is probably intended as a one and done/as needed folder, the bulk of xmls don't take up much space and are a good idea to keep incase the meta.db needs rebuilt.
Root RetroFE folder:
-collections
-controls.conf
-core
-launchers
-layouts
-meta --> used to update/rebuild meta.db
|-hyperlist
|-system.xml
|-mamelist
|-system.xml
log.txt
meta.db
log.txt
README.txt
RetroFE.lnk
settings.conf
This may be a stopgap until meta.db's sqlite3 file is able to be read correctly (which seems to have trouble opening in multiple DB viewers for me)
Edit: After waking up a bit, I realize what you were saying brolly. I misunderstood initially. From the looks of it, does look like it should read from the meta.db file but I haven't had any luck getting it to do even after deleting the include.txt. It should be reading from the meta.db though, maybe its the same issue as the fade info not reading from the meta.db?