And about my case
This is difficult. You have published the main draw, so in my opinion you should not change it. In Turin I had today's matches counting for the First round of the Main Draw, even though they were Turin's FQR matches, so the problem did not arise.
Elirj70 should be able to play Braunchweig if he leaves Wimbledon today, but as I said, I don't think you should change the draw.
I believe the last time something similar occurred, the manager put the player as lucky loser #1, and I think this would be the fairest solution in your case. However I think you should wait for a more experienced Board member to also comment.