Where is the Mame Games list stored in Launchbox

[Barny1100]

Hello question since I have nowhere to find anything
how I can transfer my approx. 500 Mame games from my favorites list from MameUi64 ..

Now I had to manually delete the games from the launchbox list for days..?

My question now:

where is the current painstakingly created Mame List for Launchbox stored?

or what do I have to do about the current list
easy to import again?

I do not want to delete 2 days again to have my sorted games back in the list ..
if I have to reinstall Launchbox ..?

Thank you

Edited December 26, 2019 by Barny1100