I recently re-installed my "ATLANTIS 2: BEYOND ATLANTIS"-GOG game, which I last played years ago and never bothered re-installing when I got my new desktop PC a few years back.
My old saved games from when I last played it on GOG don't work anymore (saved-game file structure seems to have changed from when I first played it on GOG).
Does anyone have any English-language-version saved games from their completed game for this? I'd love to download them just to revisit some of the areas in the game, since I can't re-load my original saves for it anymore, apparently.
Thank you.

I can't help you by sending save files, however you could try this mod, which adds a "visit mode" to the game.

Thanks for this link, but BOTH my AVs declare the file(s) in this link to contain malware/virus(es). Hopefully someone has English-version save game files for the game.

I'm very sorry, I was not aware of that and I didn't mean to harm your PC: I've never tried the mod myself.
I'm obviously not involved in the project, but the developer is (was?) active in the forum and I suspect that some of their patch have been added to the GOG release of both Atlantis 1 and 2.

You are wise being cautious with suspected files, however they might be false positive.
I checked the zip file with VirusTotal and got a detection ratio of 2/65 for the zip archive as you can read here. The detection ratio of the executable contained in the archive is 8/71, as you can read here.

NO worries at all! Many times my AVs see issues where there aren't any. Heuristic viruses, etc. So I re-downloaded and installed both files, but unfortunately when I installed and then ran both files according to the somewhat obtuse instructions, all I got was a white screen and a frozen PC. Twice. So I uninstalled and gave up.
I hope someone has a completed English-version GOG version of a save for me for Atlantis 2, but since people rarely post on GOG, I"m not counting on it. I appreciate the link, however!

Too bad. I was hoping someone here had saves from a completed game.

Hello again. I've constructed it so my AV thinks the link you provided above is good to go. However, when I re-direct to where my Atlantis 2 game is installed, I keep getting a message that "the game can't be found", even though I am specifically directing this to EXACTLY where the Atlantis 2 (GOG) directory folder is on my PC. Nothing works from the provided link.