Upgrade bug - 3.7 Pak 36 will not upgrade to PanzerJager IB

[billmv44]

In the second scenario, while in deployment mode, I'm trying to upgrade the PanzerJager Abt. 39 3.7cm Pak 36 to a Panzerjager IB. When I click on the IB in the upgrade screen, the stats do not change. Nor is there any change in the total cost. If I try the 5 cm Pak 38, the stats change. If I click over to the IB after clicking the 5 cm, the stats stay the same. I was able to upgrade to the 5 cm successfully. I tried to upgrade from the 5 cm to the IB but that didn't work either. Please let me know if you need the saved game file.

[Kerensky]

Temp fix, when upgrading your towed unit with transport to a self propelled unit, be sure to click the no transport button.

[billmv44]

This also is happening when trying to upgrade towed artillery to self propelled. The work-around works there too.

[dgoldie]

experiencing same problem with towed artillery to self propelled at the start of the 3rd scenario