Integration with Facebook Ads, which transfers leads to Monday and fills in individual fields, is brilliant. Unfortunately, like many things, there are limitations, and in the case of Facebook Ads integration, it is not possible to map standard questions from Facebook forms such as e.g. City, Zip code, but it is also not possible to map non-standard questions, which is an older limitation.
If a given integration already exists, it should work in all fields, not just a few selected ones.