Factorio Forums

## TL;DR:

When a blueprint is pasted over existing structures that have been marked for deconstruction... entities that match the new blueprint should have their deconstruction cancelled.

## Why?

I have a large smelting area. I design a new smelting process that *mostly* adds to the original, but moves several belts.

The current method would be deconstruct everything, slap down the new print, and wait while buildings that don't need to move are ripped up and put down again. Wasteful!

Cherry picking through the two prints to find the differences also painful. Pasting without cleaning could leave artifacts that interfere with the new plan.

Please and thank you!

Important note: if the thing being deconstructed is a belt, any items on the belt should still be removed. Otherwise we'll end up with contaminated belts everywhere, because we didn't let the old belt finish deconstructing.

+1

-1. All belts, boxes and mashines need to be fully emptied by bots, if they are marked for deconstruction. If this suggestion stops any of that, it is just actively harmful. I think the possible downsides just far outway the advantages. I frequently deconstruct a chest and place it down again for bots to empty it once.

+1