Cant Load Custom *Builds*

[Clockwick]

I installed a map With NO TERRAIN It was made on Slate but when i go to Load Builds the map isnt there. Did the new Update make it so that downloaded builds That are on Slate wont load? I know that terrarrin was removed but this was Slate.

[Ad Bot]

[Axo-Tak]

It'd be prefixed with "Slate/" or something like that.

[Subpixel]

It doesn't matter what map it's from. If it's a valid .bls in the /saves folder, it will load.

[Clockwick]

Ah thanks