Factorio Forums

This isn't really a bug, but replacing/upgrading belts is causing me problems.

Earlier, you could only replace belts with belts.
Now belts overwrite underground belts and splitters.. that causes breakages and you have to stop the speed run upgrading to fix it.

Is there an easier way to upgrade the entire belt cycle,
1. by either having belts replace only belts, ug belts replacing only ug belts and splitters only splitters...
or
2. If you send belts along the chain, the belts will auto-upgrade while sending the replaced belts further on
or
some other better way that I don't know.

maybe something like upgrade planner (a item, if in hand will upgrade the entity beyond it with the highest tier of that in inventory)

See viewtopic.php?f=6&t=54676 . There is a mod linked in that thread that should solve your belt upgrade issues.