Final Fantasy VII (USA) (Disc 2) not being added to playlist

First and foremost consider this:

• Only RetroArch bugs should be filed here. Not core bugs or game bugs
• This is not a forum or a help section, this is strictly developer oriented

Description

Opening as per https://docs.libretro.com/guides/roms-playlists-thumbnails/
"For a normal scan, the content must match existing databases from the libretro-database README. If those conditions are met but content is still not being added automatically to a playlist, consider submitting an issue report on github."

Final Fantasy VII (USA) (Disc 2) not being added to playlist, I presume the problem stems from Disc 1 2 and 3 having the same serial in redump:

http://redump.org/disc/66/
http://redump.org/disc/67/
http://redump.org/disc/68/

as opposed to other multi disc games such as Final Fantasy VIII:

http://redump.org/disc/69/
http://redump.org/disc/70/
http://redump.org/disc/71/
http://redump.org/disc/72/

Doing a manual scan results in lpl containing:
{
"path": "/storage/emulated/0/RetroArch/games/PS1 - Top 15/Final Fantasy VII (USA) (Disc 1).chd",
"label": "Final Fantasy VII (USA) (Disc 1)",
"core_path": "DETECT",
"core_name": "DETECT",
"crc32": "SCUS-94163-0|serial",
"db_name": "Sony - PlayStation.lpl"
},
{
"path": "/storage/emulated/0/RetroArch/games/PS1 - Top 15/Final Fantasy VII (USA) (Disc 2).chd",
"label": "Final Fantasy VII (USA) (Disc 2)",
"core_path": "DETECT",
"core_name": "DETECT",
"crc32": "00000000|crc",
"db_name": "Sony - PlayStation.lpl"
},
{
"path": "/storage/emulated/0/RetroArch/games/PS1 - Top 15/Final Fantasy VII (USA) (Disc 3).chd",
"label": "Final Fantasy VII (USA) (Disc 3)",
"core_path": "DETECT",
"core_name": "DETECT",
"crc32": "00000000|crc",
"db_name": "Sony - PlayStation.lpl"
},

Expected behavior

All discs are added to the playlist

Actual behavior

Only Disc 1 is added to the playlist

Steps to reproduce the bug

Import content -> Scan Directory (for content that matches the database)
Doing this on a directory which contains .chds, which within contain:

Bisect Results

N/A

Version/Commit

You can find this information under Information/System Information

N/A?

Environment information

• OS: iOS and Android
• Compiler: [In case you are running local builds]

Reproduce the scan with the three Final Fantasy VII CHDs and inspect the Sony - PlayStation.lpl entry and matching database records. Done means a normal directory scan adds Disc 1, Disc 2, and Disc 3 to the playlist, rather than only Disc 1.