Factorio Forums

I have NanoBots mod and Bobs installed. i noticed that after i laid a blueprint down of red belts, i had a few blue belts. i thought this was weird because i hadnt researched blue belts yet. come to find out that if you lay down a ghost, and use the upgrade print as the nanobots are going out to lay the item down, it will lay down the upgraded item. i used this with assemblers as well, it worked, i went up to assembler 5 even though im only at 2 for research.
Is this a known issue?

Thanks for the report however that's a mod issue to fix not a base game bug.