Unreal Match 3 Example - TileLibrary

Hey guys!
Anyone has been studying Unreal Match 3 Example?
Look at this problem I got it: with Grid_BP selected in World Outliner I deleted the sixth element (TileBlock) in Tile Library (Grid category), but for some reason, this TileBlock is still spawned when I play the game in the Editor.
That’s no make any sense. Shouldn’t I be able to control the tiles that are spawned in this section (Grid category)?

Problem solved!
In the Level Blueprint TileLibrary is set with the tiles that belongs to DefaultTheme (Blueprint Class), it means that when the game starts, the elements from TileLibrary in the Grid_BP are overrided.
Solution: Just not set TileLibrary via LevelBlueprint.