The creation of BSHeartland.esm was a significant milestone in the project's technical history. Originally, the team intended to use a unified BSTamriel.esm to house multiple provinces. However, due to engine limitations—specifically the "second worldspace bug" and the "master limit"—the team decided to split the provinces into separate project files.
This restructuring led to the merging of BSCyrodiil.esm and BSElsweyr.esm into a single, specialized master file: . Because a single worldspace (the Heartland) cannot be introduced from two separate master files at the same time, this consolidation was essential for the project's stability and development. Beyond Skyrim: Bruma and Load Order bsheartland.esm
When generating LODs (Level of Detail) for the Bruma region, you may need to edit a text file to enable the worldspace. The creation of BSHeartland