Hello! I learned from and improved a Godot plugin that can help you handle a large amount of TileData in your TileSet more efficiently.
Its main features are:
Copy / Paste: Copy TileData properties. When multiple tiles are selected, they will be matched using relative coordinates.
Set: Select the tiles and properties you want to paste.
Change Terrain: Replace the selected tiles’ “Source Terrain” with the “Target Terrain”, and update the valid edge and corner peering bits.
If you are interested in learning more, you can visit the plugin repository here: