Maps from DLC appearing twice on Overview page

Hello,

I did install the new Royalty Pack and the extra two packs that came along with it.

Now I haven't played in two days. But when I went to check out the new world, I got another one of these

This is exactly what happened to the Lovestruck world in a single save. I can't even get into either of the two Ondarion worlds. 

There were two other worlds that were also doubles, but at least I could get into one of them.

I do have a lot of savings, but this one has some royal families in it (to whom I've already moved, and I don't want to do that again. (Plus, that old save file was also the one with the Love Struck Double Worlds that I ignored.)

Now I do have mods. I did try to repair and uninstall the pack. But I did have to save a save (so I wouldn't lose track) before I did do what I mentioned above. When I did get into the game with the pack uninstalled, I had trouble getting in because of some missing information. I did click on going into the save without the pack, but then I got the notice that information was missing and I couldn't get into that household.

Then, I accidentally went back into the game while reinstalling the pack. But neither did work. I would like to try this again later. So, should I try to repair and uninstall the pack without the mods next time? Or should I try to do this without the save file or a certain save file?

Mind you, I did get the small update. But then I did check, and there was no Ondarion world.  So I have to install it, and the two other packs, in the EA app.

How do I fix this?

I also know that there is a website that talks about this issue if the above doesn't work. But I don't want to mess up my game or my computer.

Any other suggestions? Or do I have to move all of my royal Sims to another save again? I have other saves where this kind of thing will not happen. But this one is the one save that I need the Ondarion to be in.

Help.

UPDATE.

I did try to fix this issue without mods, and I am still getting two worlds even without them. I have tried to repair and uninstall the pack, but the same issue persists.

Could the problem also be save-file related? I am also wondering if there was a small update yesterday. I downloaded the game on February 12th. 

The reason why I am asking this question has to do with me noticing that with the double world from LoveStruck and Life and Death. I downloaded them on the day, but then there was an update the next day, and I got double worlds.

I would have to, once again, move all of my Sims' households on that save onto another save, which is a pain.