When a Chemical Plant II has the Ammonia recipe and is included in a blueprint, it loses the Ammonia recipe when placed if the player hasn't researched the Chemical Plant II technology.
The same is not true for the Fertilizer I recipes, which are properly downgraded.
Edit: 6 Ammonia recipe properly upgrades to 12 Ammonia, so up/down is not symmetrical for some reason.
Similar to blueprint downgrade removes recipe
Potentially fixable with the implementation of this suggestion: https://discord.com/channels/803508556325584926/883590993063051275/1383542133771731024
(discussed from here onwards: https://discord.com/channels/803508556325584926/883590993063051275/1383462571700519095).
I remember that discussion and this issue is not exactly the same. In this case the recipe actually does exist in the lower tier version, but the recipe from the BP isn't downgraded properly.
The other discussion we had was about when the corresponding recipe wasn't even unlocked when the building was placed.
The work around I used in this particular case was to downgrade to Chemical Plant I in the blueprint. The player is much more likely to understand that he needs to upgrade to Chemical Plant II (even if he already has it) than to add the Ammonia recipe. When the upgrade happens, the recipe is somehow upgraded, which makes it even more strange that it isn't downgraded properly.
Well, these issues are tightly coupled together, so they might as well do the 2 at the same time.
I think this one probably is easier to fix, because the feature exist for some recipes, it's probably just a matter of adding the feature to the 12 Ammonia recipe that it should downgrade (I don't know why upgrade and downgrade are not symmetrical--but there might be good reasons).
The other one is potentially more difficult, as it involves adding not yet unlocked recipes, which is a feature that not yet exist in the game for any recipe.
I say just not have different recipes at all. Have them all unified for a range of upgradable machines.
Perhaps introduce machine crafting speed into the game (even if as a background variable,
that's transparent to the player, as the recipe visualisation would just pre-multiply it where needed)?
That's one way to solve it, and probably make things more generic and approachable for modders. 💯
Bump. Still an issue sin Update 4. Blueprint Chem Plant II had the ammonia recipe. When placing it in a game where Chem Plant II has not yet been researched, the ammonia recipe is unselected, but the Fertilizer recipes are still selected.
Same for Assembling machines.
