there won’t be a simple method to transfer everything. there’s already ways to transfer maps but some things like code, kismet or anims are so different that they don’t really relate.
they went out of their way to make UE4 users have an easier learning curve and also allow more possibilities. incidentally, it went against some of the workings of UDK but that’s just a side effect.
moving over to UE4 is quite easy I would say (but you’ll always miss things from UDK).
moving a project though… better finish it in UDK and save yourself the frustration and wasted time.
with an ongoing project, one with a finish line somewhere on the horizon, and one with a rational and achievable goal, there’s no reason to move over to UE4 rather than finishing the game in UDK.
even graphics can be polished to a close level (just this week I finished a pseudo-PBR set of materials in my UDK project). as an indie loner you’ll never compete in graphics anyway.
so yeah, you’re not alone.