I created an object that is roughly 400mm x 125mm. It won't fit on the bed of my 330mm x 330mm printer, so I split the .STL file in half using 3D Builder. When I loaded the two halves they look fine in the main importer. However, when I slice them ONE of the two halves has (evenly) missing layers throughout the data.
I loaded the file with the issue into other slicers and none of them had any issues. Also, Simplify3D v4.0 loads and slices the file correctly. ALL versions of Simplify3D v5.0.x and v5.1.x have this issue.