[2.0.15] Heavy oil became petroleum

[dragon_gawain]

Somehow, my storage tanks full of heavy oil have instead become half full with petroleum.

I've seen this issue happen (at least) twice before, but was never able to catch it. Since then, I set up an alarm to alert me if it ever happened again.

Last night, I had been playing factorio and all had been good. I update and open up the game this morning, and my alarm telling me that petroleum is in my heavy oil tank is going off. I don't think it's an issue exclusive to this update because I've seen it happen before.. I'm not sure if the other times it's happened has been because of updating or not..

However, considering that my petroleum tank is full, it's pretty evident to me that the issue is occurring when the file was loaded.
I also checked the autosaves and all the autosaves had the same problem - my heavy oil became petroleum.
A save I had from 10 hours before also had the issue.
However, a save from 100 hours before was fine. This save was saved in version 2.0.12 whereas the other saves were from 2.0.14.

I've triple checked all the pipes manually (and the pipe connection visualizer agrees with me) that there is no petroleum source attached to the heavy oil tanks.

I'm attaching 2 save files - one that has the issue, and the autosave from 2.0.12 that doesn't have the issue. The one with the issue I'm on Vulcanus, and my custom alarm is going off so you should be able to find my oil tanks with that. The oil tanks are on Nauvis, at the left side and underneath my main bus.


Hope you can figure this one out! It might just be weird version migration issues, but I've seen it a few times, and now that I've caught it read handed at time of load, I figured it was a good time to report it!

Thanks for all your hard work on the game!

[The_Sane]

It does indeed sound like 119600. So they are aware of the issue.

Hopefully will be fixed sooner rather than later as it is currently caused by updating the game, which is not ideal.

[dragon_gawain]

Yup, it does sound like the same issue as that.

I try to find duplicates before I post things, but there's a lot, and different titles and such confuse the issue even more so I didn't see that one.

This post should be merged into that one and marked as a duplicate.