Re: Saves won`t work after change from 64bit to Legacy 32bit version
This is not a bug, As you can see in the FAQ
Will my save files still work in The Sims 4 Legacy Edition?
Yes, save files will still work with The Sims 4 Legacy Edition. Your save files will automatically transfer over when you first launch The Sims 4 Legacy Edition.
Note: Standard The Sims 4 save games will only be transferable into The Sims 4 Legacy Edition if the save was generated before the Legacy Edition update to the base game. If you play and save in a newer version of The Sims 4, that save game will not be transferable to the Legacy Edition.
The main issue is that if you save the game with the 64 bit version, the game will be at a newer version than the Legacy Edition has and you can't use a save game that was used with a newer patch level on an older patch level
Do you really need the 32 bit on the older computer ? Most Windows PC should be able to run a 64 bit OS.