I was going to replace my SSD card, and decided to upload the project folder to my google drive. When I redownloaded it, It wanted to use unreal engine 5.3, but I couldn’t use 5.3 and had to use 5.4. So I tried to switch the versions, but my .sln file in rider didn’t recognize any Unreal Engine Macros, and couldn’t compile it. So I created a new project and only imported the Content and Source folders, and kept everything as is. I regenerated the sln, and it worked! no errors, but now I get an error on basically every line of code, with 99+ errors when building. Errors like Error C3861 : 'CreateDefaultSubobject': identifier not found and Error C2079 : 'ALever' uses undefined class 'FNAFTSOR_API' and almost all my variables are causing errors.

I have tried:

• Keeping new project name the same
• Editing the .uproject and build files