Blast Furnace takes 405 Construction Parts III to Upgrade

Describe the issue
Blast Furnace upgrade to Blast Furnace II costs 405 Construction Parts III

To Reproduce
Steps to reproduce the behavior:

1. Build Blast Furnace
2. Try to upgrade to Blast Furnace II

Note: Blast Furnace II cost to build is only 135 Construction Parts III

Expected behavior

• It should cost less than full cost of Blast Furnace II which is 135 Construction Parts III

Additional context

• Game version: 0.4.1d

Attachments

This is strange, we fixed this in v0.4.1a. Could you attach a save file please?

Unfortunately, I don't have a save that shows it. Seems that when I demolished my Blast Furnaces and rebuilt as Blast Furnace II, the upgrade now shows an upgrade cost of 135 Construction Parts III. Will attempt to repro again with an older save file and will supply that if I get the same problem.

Got a save on the issue (on v0.4.1.e)

UpgradeCost.save
However, confirmed that rebuilding the MK1 will fix the cost!

Files not imported: UpgradeCost.save