So earlier today I was searching mods for forge 1.12.2 (14.23.5.2838) and I already had selected a few. Well, problem starts when I changed the forge version by mistake, which was annoying but I thought it wouldn't be a problem because I'd just have to switch it back and reinstall the mods. The thing is that some mods won't have the version I previously installed (which makes no sense because a couple hours ago they were there and they're still in the minecraftforge web. Such mods are: JurassiCraft, CodeChickenLib for NEI, AbbysalCraft, LLibrary and ChinjufuMod.
Why is this happenning?