Factorio Forums

When trying to place same quality production building over an existing one, the rotation cannot be changed (except for e.g. belts).

When placing better quality buildings over them (e.g. upgrading chemical plants), the building might get rotated, that might break up the existing connections, e.g. in this case the fluid in- and outputs.

I would expect the rotation to be fixed, as with same-quality items.

Thanks for the report however this is working as intended. If your goal is to purely upgrade quality, that's what the upgrade planner is intended for.

What you're doing: manually replacing a building with a different one of different quality, is in fact completely unrelated to quality and is the simple "fast-replace with new building in the same fast-replace group". It also supports changing directions through fast-replace.