Some mods (e.g. Krastorio 2) have upgraded versions of mining drills. If you upgrade them using upgrade planner, they upgrade correctly, except in the case when
1. mining requires liquid (e.g. uranium), AND
2. resource under this current drill is exhausted.
In this situation, the miner will be replaced with a mining drill with not liquid inputs / outputs, meaning the whole row of miners will stop working:
[0.18.21] Upgrading exhausted miners that require fluids replaces them with miners without fluid I/O
Re: [0.18.21] Upgrading exhausted miners that require fluids replaces them with miners without fluid I/O
Seems reasonable. Fixed for 0.18.36