Transferring save and mod files from SDD to HDD

Hello!

When I went to download the new update for Sims 4 last night and told that there was enough memory space available.  Since I have an SSD/HDD dual drive, I figured my best bet was to copy everything Sims related to the HDD.  I messed up and couldn't get the game to start, so I went ahead and re-downloaded origin and sims 4 on the HDD (I saved all of my sims 4 files in a back up file).  Once that game could start again, I transferred the saved game files and mod files to the new folder, but now the game doesn't recognize any of my saved content.  What can I do to fix this?