I just watched Captain America: Civil War and there was something that didn't make sense. In Captain America: The First Avenger we find out that Abraham Erskine created the Super Solider Serum and even he didn't get it right the first time. The last vial was destroyed during the Hydra agent's escape and it was said that the formula died with him. In Agent Carter we found out that Howard hid a vial of Steve's blood with him which Peggy eventually destroyed. In the Incredible Hulk we found out that even Bruce Banner failed to replicate the process. In Civil War we find out that Howard Stark was travelling with a certain serum that Bucky stole for the Russians.
Did Howard manage to replicate Erskine's formula and did it work for the Russians besides the preliminary testing?