I lost my saves for Rydygier's Altis version too going from 2.16 to 2.18 (and do an automatic hexedit of the builtin version number with the site save.arma3.io) It might be the mods I used. I didn't thurougly diagnose that with going back to the last previous version through Steambranches.

marchettoo I don't know why you are losing your saves. Normally it is something to do with mods or difficulty settings.

My savegame deletes everytime i leave the game, any fix for that?

Very entertaining One small thing that bothers me is that the mission uses the factions of Altis, so everyone has Greek names. It would be fine if Tanoan factions were used. But that's a minor detail.Overall: Well done!

I can't get rid of the multiplayer tag for some reason

Says multiplayer capable but I think not. I'm still playing this mod too. ;)

I have added some military buildings at stronghold locations so that players that use the realistic loot setting will have some buildings to provide loot.

Does it have some military buildings added to the map, like strongholds etc? Basic Tanoa is pretty empty in that regard.