Importing part of Lyra to existing project?

Here is the fact. I see Lyra game contains tons of precious contents, blueprint , ecc. but in case of an ongoing project it is not possible to start using Lyra and rebuild a game on it (or maybe yes, but please advice how to do that :))

So, how can we copy some Lyra contents and features to our projects? Does the calssic migration works?

Many many thanks

anyone please?