Hi there.
I'm very sorry your issue has sat here for so long without a response.
Us volunteers are a little on the burnt-out side right now! That's not an excuse, though, but let's see if we can make some progress, if you're still around after all this time...
I was actually looking at this issue separately from your thread, and you're right. There is not currently a way to import an historical player and have him be draft-eligible.
I have logged this as TT # 3836. Hopefully Markus can take a look at this!
Steve