Ok last Post about this. Can’t waste time on this anymore, wanna go building. So i went with it, posed all elements and their Center to Zero, so they easily snap to each other. Now it work’s like a charm.
Still thanks so much for the trouble and if there is actually a bug somewhere maybe it can be fixed at some point. For me it’s just: i can get going now.
Hey, probably I was not clear in original message - my method is more like a hack. Seems like ue4 does not use information about Up axis as well and treat just in absolute world location if “Transform Vertex to Absolute” is not checked(Which is weird I guess). Changing to Z-up axis is more for convenience, the whole trick is to rotate your objects in vertex/polygon mode so their actual/absolute location would correspond to UE4 Z-axis and will look fine in your viewport due to changed Z-up axis in settings. Basically you should transfer rotation from Item mode to Vertex/Poly mode and then reset rotation in Item mode.