Force assets to load in older engine version UE

LinkerLoad.cpp.diff

--- a/Engine/Source/Runtime/CoreUObject/Private/UObject/LinkerLoad.cpp
+++ b/Engine/Source/Runtime/CoreUObject/Private/UObject/LinkerLoad.cpp
@@ -1283,9 +1283,20 @@ FLinkerLoad::ELinkerStatus FLinkerLoad::SerializePackageFileSummaryInternal()
        // Don't load packages that were saved with package version newer than the current one.
        if (bLoaderVersionCheck && ((Summary.IsFileVersionTooNew()) || (Summary.GetFileVersionLicenseeUE() > GPackageFileLicenseeUEVersion)))
        {
-               UE_LOG(LogLinker, Warning, TEXT("Unable to load package (%s) PackageVersion %i, MaxExpected %i : LicenseePackageVersion %i, MaxExpected %i."),
-                       *GetDebugName(), Summary.GetFileVersionUE().ToValue(), GPackageFileUEVersion.ToValue(), Summary.GetFileVersionLicenseeUE(), GPackageFileLicenseeUEVersion);
-               return LINKER_Failed;
+               if (Summary.GetFileVersionUE().ToValue() > 1000 && Summary.GetFileVersionUE().ToValue() <= 1002) {       
+                       UE_LOG(
+                               LogLinker,
+                               Warning,
+                               TEXT("Loading package that is too new, but going to try anyway. Package %s, Version %i, MaxExpected %i"),
+                               *GetDebugName(),
+                               Summary.GetFileVersionUE().ToValue(),
+                               GPackageFileUEVersion.ToValue()
+                       );
+               } else {
+                       UE_LOG(LogLinker, Warning, TEXT("Unable to load package (%s) PackageVersion %i, MaxExpected %i : LicenseePackageVersion %i, MaxExpected %i."),
+                               *GetDebugName(), Summary.GetFileVersionUE().ToValue(), GPackageFileUEVersion.ToValue(), Summary.GetFileVersionLicenseeUE(), GPackageFileLicenseeUEVersion);
+                       return LINKER_Failed;
+               }
        }