Hi,
I find it quite hard to accurately place a SVG in my design that I designed externaly and to determine values for reuse, because the placement paramters get resetted / normalized as soon as I edit another placement parameter. It would make much more sense if the paramters would stay "edited" until the placement dialog is closed.
For example: When I scale an SVG the "Scale Plane XZ" value gets changed. I need this value to evaluate my scaling decision, but sometimes the exact factor is unknown due to unit-incompabilities of external tools. So I have to move the SVG into position to see if it fits, but then I loose my scaling factor. This is especially annoying if I want to import several SVGs from the same external tool. To get the final scaling factor (or position, rotation offset) for reuse, it would make much more sense if the values would be preserved until the placement dialog gets closed. It would also make it possible to undo wrong placing decisions, which is impossible now. If I want to undo positioning now, I have to cancel the whole procedure and restart the import process, which makes no sense.
With the May 7, 2016 update you announced rotation and scaling of SVGs inside the view, which is great. To visualize my problem I want to share your animated gif of the new feature page, where the paramter reset is very good visible: