The Capture feature into Fresco seems to be quite limited, or takes a very long time for captures to show up.
I agree Fresco is not a good direction to send users of Draw towards. As a business they're hardly going to say we're discontinuing this app so you can be frustrated trying to do everything you're used to in another app though are they. Fresco is a completely different type of app. In fact the Vector in Fresco creates shapes rather than lines so be ready for that as well.
I used Draw very early on, to me the transition would be more realistic to suggest you move across to Illustrator on the iPad, since it was called Illustrator Draw afterall.