Thank you for the report. These sorts of issues need to be reported right away, not a day and a half later. I don't visit every server after every update so it's important that people let me know when something is wrong.
The ark developers have changed how servers are initiated in some way and have not made any change notes regarding it. It seems to be causing the servers to not load the correct map save file, more so primitive plus than the other servers but it has happened on Scorched Earth as well so it's not an isolated issue. My guess is it has something to do with the order of operations in spooling the servers up since primitive plus has a much longer startup process requiring loading of all that extra content.
I'm working on fixing the map. This takes some time as I have to troubleshoot the correct map save (harder to estimate the longer the server has been up with a bad map), and also takes time updating Ark and loading in primitive plus.