Cant change Lightmap Index

Hi, I just converted my project from 4.23 to 4.24 and I’m having problems with changing the Lightmap Index.
Most of my FBXs have two UVs, and I could do it fine in 4,23, but when I moved to 4.24, if I reimport or import new FBXs, Unreal does not let me change it to 1. Previous FBXs are fine, and it’s fine if I import them into a new project. I tried to save a package and import it to 2.24, but as soon as I built the lightmap, It got stuck into the 0 position again.

BTW, Even if I use auto UVs, it does not work.

And now, it does not work with new projects anymore.

Hello,

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Thanks