Oh, how and why do we put ourselves through this? I had plans to copy my current Sims4 folder to an external hard drive but got caught up in RL stuff and it didn't happen. While dealing with problems after installing the EA App, the laptop I had been using for Sim4 up and died. I doubt the app was responsible for what happened, that laptop was 6 years old and had been slowing down, showing its age more and more every time I fired it up. But my saves are probably gone. A few of those are ones I actively played for as long as I have had the laptop. I have tried every trick in my arsenal in an attempt to retrieve that folder, but so far it doesn't look like that will be possible.
The last three days have been devoted to setting up Sims4 on my newest laptop after moving some other games over to my desktop. I almost always keep Sims4 on a laptop so I can take it anywhere. But when I fired it up for the first time, I almost cried thinking about all the hours of work I just lost. Thousands of hours along with eight saves plus the new save I had created just for GT. Gone. All of it is gone.
As disappointing as this might sound, I think you should play it safe and not play the current save you have for Erik until all your mods are updated. While waiting for that to happen get to know everything about the new update and GT in a new save you can always delete later. I know how much work has gone into your current Erik save and I would hate to see you forced into yet another do over. Copy that Sims4 folder and put it someplace safe. Don't make the same mistake I did in not protecting my hard work and blowing up my game. :/