Wrong cost to upgrade Blast Furnace

Describe the issue
When I'm trying to upgrade a Blaste Furnace I to II, the cost is showing 540 instead 180 from building a new one.

Expected behavior
I'd expected the cost of upgrading the furnace to be 180.

To Reproduce
Steps to reproduce the behavior:

1. Load attached save '...'
2. Do xxx '....'
3. Strange thing happens '...'

Additional context

• Game version: 0.4.4a

Attachments

that one if fix. unfortunaly it doesnt work for every save so sometimes it show still the wrong numbers. (and cost as much so rebuild it the only option atm)