I think that was the explanation I got when I posted in the forum, but in my case I waited a few days and my unit never came back.
If your status bar shows that you have no unit, then you have no unit. They will not just reappear. In my case, I still had a unit listed, it just wasn't in the region with me. I was listed on the regions status page of our capital in the Nobles Without A Unit section. However, a scout report of our enemy's capital, where I had been prior to being captured, showed my unit as being there, with the commander listed as "(not present)". A few hours later my unit was magically with me in the capital, after the cleanup script ran.
