I have 2 modpacks that iv'e made running on my minecraft launcher, one is 1.12.2 and the other is 1.7.10. I wanted to make another modpack for 1.14.4 so I downloaded the Forge installer and installed it in my .minecraft folder. I go to the versions folder and I can see 1.7.10, 1.12.2 and 1.14.4, but when I load up the minecraft launcher the only installations it shows it 1.7 and 1.14. To get my 1.12 back I had to uninstall forge 1.14 and re-install 1.12.