MAME Rom set (merged) import to LB folder

[CapSwey]

Hi people,

I'm on Windows 11 running Launchbox 13.27. I have a MAME 0.87 package from which contains ROMS (merged), ROMS (bios) and the CHD files. I'm aware how to use them regarding folder structure and file name.

The thing is I only want just a part of this package because of space savings and delete all ROMS/CHD's etc. I'm not going to use afterwards. Like not-working titles, majong, hacked games etc. Currently the MAME 0.87 package is outside of LB. I'm trying to create a currated set inside the LB/Game/Arcade/MAME folder. I have used the "MAME Acrade full set" import method. Marked everything the way I want it to and now LB is fetching all bezels, images, videos etc. How do I copy just the roms I'm using to the LB/Game/Arcade/MAME folder? I'm aware I need to add the BIOS and CHD files later on, it's just the ROMS for now and they are in a merged package.

Thanks for helping me out guys! I feel it's a big waste of space to copy the entire ROM set to my LB folder if my plan is to only play a selection of those titles.  

Is this the proper way or does this only work with unmerged sets?
1. Select ALL Arcade roms in LB
2. Tools -> File Management -> Export/Copy ROm Files from Selected Games to New Folder...
3. Tools -> File Management -> Change ROMs Folder Path for Selected Games...

Edited 1 hour ago by CapSwey