Blueprints ignored between saves - Undergames - Build V2.0.6f2
Windows 7 64 bits
Ram: 8GB
CPU: Intel i3-4170 3.70GHz 2 Cores, 4 Logical Processors
GPU: NVIDIA GeForce GTX 970
Hard AI (not Master AI)
Volta Volcansnow Campaign. Reloading any of the saves will not make the workers build the Bombard on the image. They ignore it completely. New defense blueprints are fine and the workers work as intended, but the Defense Parts are not rendered when the workers move them.
Bombard 2.png
1 group stage volcansnow_20190406180036.meta
1 group stage volcansnow_20190406180036
1 group stage volcansnow_20190330192656.meta
1 group stage volcansnow_20190330192656
So I could see this one bombard not being built by worker but we're missing the step to reproduce this issue so I can't progress on this issue I'm afraid.
As for your save file you can still manually drop a defence part to the defence.
And part being moved by worker not showing properly will be fixed on next patch