I'm sure this is true for any sufficiently complex engineering project that wasn't wound down with an eye towards restarting it later. It's practically impossib

I'm sure this is true for any sufficiently complex engineering project that wasn't wound down with an eye towards restarting it later. It's practically impossible externalize all the practical details that the individual engineers hold in their own heads and pass down organically when the project is still active. I'm sure at the time they simply assumed that this generation of weapons would be long obsolete and replaced before the inability to make more fog banks became an issue.