I noticed in the sale that Sudden Strike 2 didn't show up as "owned" already for me, even though I was sure I had it. Sure enough, I can find and download it in my library. But the store page doesn't mention it, and I also can add it to my cart without any further note.

Does anyone else who owns the games see this happen? Was this maybe one of those re-released by a different publisher deals? I remember it happened for some other popular game series on GOG.com, although I don't remember which one (release by publisher A, removed from sale, released again by publisher B, people who bought it from publisher A still had it in their libraries but they were also able to re-purchase it from publisher B).