Re: How do I move my expansions downloaded to my pc, to origin?
@BabyyBluuu You could transfer the installed data to your new computer, but the problem is, there are additional registry entries necessary to validate your install. Without those, the game won't run no matter what kind of install you have. Adding those entries basically requires installing the game, since you can't just copy and paste registry entries across computers.
If you still have the discs with their codes, you can register those codes in Origin now, provided you never did so before. Then you could download the packs directly from Origin. You could also install via disc and hope Origin recognizes those packs, although it doesn't always. If you don't have the codes, you may be able to find them on your old hard drive. This is the normal approach, when you're looking on the computer that has the registry entries:
https://sims3.crinrict.com/en/2013/09/how-to-find-your-serial-number.html
It would be more complicated to find them on your old hard drive, but at least that should tell you where to look.