How does Launchbox choose which MAME rom clone/parent is the default when launching?

[Jakobud]

I'm new to Launchbox and trying to understand something. I have all my MAME roms imported and working.

When I look up a game like Teenage Mutant Ninja Turtles, Launchbox chooses the 2 player Oceanic version as the default that is played when you launch it from Launchbox. Why is this version chosen as the "default" clone to run?

For TMNT, the parent rom is "tmnt.zip", which is the World 4 Player Version X. All the rest are clones, including the 2 Player Oceanic version (tmnt2po.zip).

So I'm just trying to understand how and why Launchbox sets it up this way by default. I have a 4 player arcade cabinet I'm getting ready to put Launchbox into. I'm wondering how many games I'm going to need to go and edit Metadata for and change the default to the 4 player version and also change stuff like Playmode to 4-Player Simultaneous, etc.

[Lordmonkus]

Based on region priority you select during the full set importer.

[Jakobud]

Ah got it I will try reimporting. Thanks