It could be there is something on that drone we want them to have so they will think they have something real. The Pueblo incident seems to have been something like that. We allowed the Norks and thus the Russians to capture a code machine they needed that included a back door so that we could read their stuff for a long time after.
So, we gave them the Pueblo and the code machine knowing full well they would start using the code machine for their own purposes without knowing that we were following their every transmission via the "back door".......
Right.....makes sense to me.