When renaming or moving a map with a landscape in it this will fail and an error prompt will appear.

Steps to Reproduce
  1. Create a blank Blueprint project in 4.20
  2. Add a Landscape to the level and then save it
  3. Try to either rename the level or move the level into a different folder

Result: An error prompt appears: Can't save ../../../../../UE4/DeleteME/Content/NewMap2.umap: Graph is linked to private object(s) in an external package. External Object(s): LandscapeMaterialInstanceConstant_2 Try to find the chain of references to that object (may take some time)?


Expected: The level will be renamed or moved successfully.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-62150 in the post.

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Cannot Reproduce
ComponentUE - LD & Modeling - Terrain - Landscape
Affects Versions4.194.204.21
Target Fix4.23
CreatedJul 25, 2018
ResolvedMay 29, 2019
UpdatedJun 24, 2019