I have encountered a problem with breeding modified animals from ImprovingMinecraft modification (with enabled animals_genetic_evolution option): all newborn entities lose their information about the generation and go wild (aggressive and unprofitable). This is an important point of the mechanics of modification and this behavior creates difficulties.

Having little experience in programming, I decided to understand what was happening and to examine the Feed station code, after which I came to the conclusion that all processes are only simulated and no vanilla reproduction actually takes place. Spawns a completely new entity with standard values, just from the same instance. Consequently, is not on the IMC side therefore I am writing here.

IMC 1.12.1
Railcraft 10.2.0

Manually:

From feed station:

I do not know how exactly is this thing handled in IMC after looking at decompiled code. We might need to fire events.

Unfortunately this mod is not in 1.12, so we cannot support it very well in the future.