This might be the first game to do this? Games like Borderlands 3, Spider-Man Remastered and Final Fantasy VII Intergrade require to upload the save to their server on the PS4 version before downloading it on the PS5 one.
Jedi Fallen Order only requires for the PS4 save to be on the PS5 system storage:
Jedi Fallen Order only requires for the PS4 save to be on the PS5 system storage:
On Playstation 5, ensure your console has the PS4 save data on system storage (either from previous PS4 version playtime on the console, download from Cloud storage, or transfer via USB stick). From there, there will be a "Import PS4 System Save Data" prompt on the start-up screen. Simply select that option and you will be able to utilize your older save data.