Issue: missing inner perimeters if object is in the center.
Case 1: One object only - object is centered by "Center and Arrange" button-> inner perimeters are missing on first 6 layers
Case 2: Two objects - one is in the center, the second (of the same parttype ) is not in center: missing inner perimeters on first layer only on centered model
Case 3: One object only - object is out of center: inner perimeters are OK
Case 4: Two objects - none of them are centered: inner perimeters are OK
Exactly the same process, only imported or removed one more object and/or moved the object out of center.
This was the first part I sliced with my brand new Simplify3D software... Not the best introduction.
(Besides that issue, the first layer is not solid and has gaps between the lines, which was never an issue for me in the past with any of the slicers I used. That still can be an S3D learning curve topic for me, so not claiming yet...)