Can't move my Sims 4 DLCs out of Origin (to Steam)

okay, so I think I’m having somewhat of the same issue. 

I’ve played Sims 4 for years and recently wanted to get back into it. Went to origin to redownload on my new windows pc, and found that origin is no longer, and that now there is the EA App. Fine. I downloaded the base game, no biggie. Then when it came to my 20+ packs/dlc stuff, it kept coming up with an error that they wouldn’t download. I repaired the game, cleared the cache and still nothing. When I go to “manage add-ons” it says manage in steam. I don’t think I even purchased them with steam. I’ve always used Origin. Any ideas?

@Dan_Urios  The article you linked isn't quite accurate.  What you need to do with mixed content is to uninstall the Origin version of Sims 4, install the Steam version, then login to Origin and download your packs, which will then go into the Steam install.  And your packs don't come with CD keys either, nor is there any way to transfer your Origin-owned packs to your Steam library.  For more information, please see this article:

https://sims4.crinrict.com/eng/2020/06/the-sims-4-steam-version/

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@Dan_Urios wrote:
@puzzlezaddictSo does that mean I'll have to have both Steam and Origin installed? Because my Origin can only exist in my computer through an emulator since I'm on Linux.
I'll try this method asap and come back at you, thank you!

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@puzzlezaddict Welp, that didn't work. I went back to reading your reply and I wonder what you exactly mean by "download your packs". At first I thought you meant that I should:
1) Uninstall every bit of Sims 4 content from Origin
2) Install the Sims 4 base game on Steam
3) Go back and reinstall Sims 4 + DLCs on Origin (Steam and EA accounts have been already linked in this whole process)

But since the DLCs keep showing as non-bought in the Steam library, I wonder if this is what you meant.

@puzzlezaddictOkay, something happened 😭 On one side: I tried launching The Sims 4 base game on Steam and, even though the DLCs don't appear as bought in the Library, they appear inside the game!
My problem now is that the game won't start anymore now. The last thing that happened is that I moved my Mods, Tray and Saved folders from the Origin folder to Steam's. And last I checked, there were no issues with them on Origin.

@Dan_Urios  Where exactly did you put the user data?  It's not supposed to go into the game's program files at all.  For both an Origin and a Steam install, the files go into Documents > Electronic Arts > The Sims 4, and in fact Origin and Steam installs read the same folder.  I understand the file structure may be more complicated than that given your Linux setup, but the principle is the same: Sims 4 will look for user data in the one location regardless of the type of install.

In case you're not sure where the game is storing data now, you can check in-game once Sims 4 is running again.  You'll need to remove the folders from wherever you put them, but that would be the next step anyway.

https://sims4.crinrict.com/eng/2018/07/how-to-find-your-user-folder/

Anyway, if the game works once you've removed those folders, it should have created a new Mods folder; please transfer a few of your mods to that folder (not the Mods folder itself; the point is to get the game to create a new one) and test again.  If the game still loads, you can use the 50/50 method to sort through your mods and custom content:

https://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content#The_50.25_Method

If the mods you test stop Sims 4 from loading, remove those and test one or two others.  If those don't work either, please download a fresh copy of one mod that's confirmed compatible with patch 1.93 and test it.  If that works, it's possible that your existing mods were corrupted at some point, and you may need to redownload everything.

Once you've sorted out the contents of the Mods folder, you can move over the contents of saves and Tray.  Here again, keep the new folders the game has created and only move over the files themselves.

@puzzlezaddictOkay, so: I moved the three folders (Mods, Tray and Saved) to Desktop, because even though they were saved in the theoretically correct destination I thought that maybe what you mention about the folder created by Steam itself might be it.
The game didn't start either then so I decided to uninstall and reinstall the game, but with Steam open I keep seeing the "play" button reappear after I click it. Also, the message of the "processing vulkan shaders" keeps on appearing and taking forever.
I've tried starting Origin before trying to launch the Sims on Steam also, but it doesn't make a difference.

@Dan_Urios  Honestly, you may be better off asking for help on a forum that deals with Linux-related gaming issues.  I don't know enough to offer anything further, other than the small suggestion that you go over how you installed the game last time (when it worked) and try to copy that process exactly this time around.  To my knowledge, none of the other regular Sims helpers have any meaningful experience running Sims 4 on Linux either.

I wish I could tell you what's going on here, but I doubt I could figure it out even if I had your computer in front of me.  Sorry I can't do better.