Hi @unit23,
On version 1.3 we implemented the ability to save and restore complete quest manager states.
Problem is, they are intended to save as binary data, not strings. Mainly because of security, performance and size.
With this functions you receive an struct that you can save with any subsystem, like SaveGame objects.
Saving to strings would probably require some c++ knowledge. I’m not sure since I never looked very deep into it.
Let me know if you need anything else,
if this feature doesn’t work for you we could see if something else is possible 
Greetings!
muit