Update a tilemap without corrupting everything

[zeteginara]

So, I have a sprite sheet that I made a tilemap out of.  Suppose I want to add some tiles to the spritesheet (without changing the dimensions of the actual .png file, but have a multi-layered tilemap that's pre existing.  How do I go about adding the tiles without completely corrupting the tilemap?

[unikronsoftware]

That should just work, unless you deleted all the unused sprites from the spritesheet import?

[zeteginara]

No, I didn't, but when I opened the tilemap again in my scene, all the tiles in the palette were corrupted.  I had to delete and recreate a new tilemap.  Thankfully I didn't start much in the way of work, I'll see if I can replicate it next time I need to update my tilemap.

[unikronsoftware]

It could have just not updated. If that happens again, try recommitting the tilemap, it will force it to rebuild.