Tank you for your time @Nikolay Zhelyazkov
1. Yes, this corresponds with what I see but I don't understand why and I don't agree with the logic 🙂. When drawing in "Rear Rack View" (Top/Plan) I think it is logical that the view is from the back. Not viewed through the front. When making viewports of the rear of a rack, where there in my world (touring and rental audio) is a lot of panels and equipment items, the view in both 2D and 3D should be with the rack spun 180 degrees. Actually, this is not a problem with full-rack width items but will be problematic for half-rack items.
2. Moving the insertion point to the top left front (of the rack ears) makes it offset a little bit, but not enough. I attached a file where the UPS has its rack ears mounted 62mm in from the front of the device. This device should stick out 62mm in front of the rack.
The file also includes a sheet layer where I think my challenge with half-rack rear mounted devices are clear.
Half-rack rear mounted and symbol insertion point Test.vwx