Factorio Forums

Is it possible to edit the blueprint in your blueprint library and have all placed copies in the world that use that blueprint updated (via ghost objects).

Im placing lot of train stations via blueprints and now considering to add a sirene circuit for alerting on empty storages. What is the best and fastest way to update all existing train stations?

Neither the ghosts nor the constructed buildings have any information that they came from a blueprint. The best way is to probably paste the new blueprint over the existing buildings manually (with force-building if necessary), I don't think there's a way to do that better. I'd guess it might theoretically be possible to make a mod to handle such things, but I haven't seen one like that on the mod portal.

This is a good idea for a mod actually.
There are a lot of times where I paste some blueprint only to see a single mistake which I then have to manually remove/redo. For every instance I pasted. Which is bothersome.