Family disappears when I come back from the future

@sammycorn1234  Try again, but this time, reduce the load on the game engine as much as possible.  Here's how:

• Empty out your sim's inventory as much as is reasonable.  Having a few items is fine, but not much more.
• Save the game immediately before you want your sim to travel.
• Exit to the Main Menu and lower all the graphics settings to the minimum.  Turn off the in-game shopping experience and the interactive loading screens as well, then quit to desktop.
• Delete the five cache files in your user folder again.
• Take your computer completely offline.  If you play through the EA App, you can sign in and put it in offline mode before disconnecting your computer and launching the game.
• Load the game, and once the clock has run for a few sim-minutes, send your sim home right away.
• Once they arrive, if they arrive, use "save as" to rename the save, then quit.  If you want, you can first exit to the Main Menu and raise the graphics settings again, but be sure to quit to desktop before reloading the save.

I'm afraid I don't have much more than this, just a possible workaround that's janky at best and not reliable at all.  I will say that sometimes a travel transition succeeds, barely, after failing previously, so please try this two or three times before giving up.