Can I add Sims 4 packs from Steam to my EA App/game?

I originally purchased TS4 through what was Origin at the time, along with many packs over the years. These are all now in the EA app. I recently purchased the Sims 1 and 2 bundle through Steam as I had a giftcard balance. This bundle included those two kits for TS4. Is there a way that I'm able to "incorporate" those kits into my current install of TS4 that I have through the EA app? Or are they essentially useless to me?