If a plugin creates a new landscape record for a cell that already has a landscape record from another plugin, only the latest loading landscape record is used. This creates a stealth-conflict that existing tools don't detect.
In cases where the master of the cell has a landscape record, landscape edits should always be done with overrides.
In cases where the master of the cell does NOT have a landscape record (I found a good half dozen of these in the vanilla esms), there isn't a clear remedy.
If a plugin creates a new landscape record for a cell that already has a landscape record from another plugin, only the latest loading landscape record is used. This creates a stealth-conflict that existing tools don't detect.
In cases where the master of the cell has a landscape record, landscape edits should always be done with overrides.
In cases where the master of the cell does NOT have a landscape record (I found a good half dozen of these in the vanilla esms), there isn't a clear remedy.