What is this message?

Development Programming & Scripting
,
1

Blockquote
PackagingResults: Warning: [AssetLog] (C\ Disk Path\ . . . \Level Name).umap: Creating a new object GUID for object ‘LandscapeHeightfieldCollisionComponent (reference path + Level Name).(Level Name):PersistentLevel.Landscape_1.LandscapeHeightfieldCollisionComponent_34’ during cooking - this asset should be resaved
PackagingResults: Warning: [AssetLog] (C\ Disk Path\ . . . \Level Name).umap: Creating a new object GUID for object ‘LandscapeComponent (reference path + Level Name).(Level Name):PersistentLevel.Landscape_1.LandscapeComponent_35’ during cooking - this asset should be resaved

I migrated my project and packaged it, and this message came up.
Why???

2

Hey there @Baetong20! Creation of a separate GUID is not inherently a bad thing, this message can appear after manually moving things with your file system around in the project folders, objects sharing the same GUID, and more. However this error is not always fatal. Did it crash on cook? Could we see the entire log?