Expanding on this - if you have multiple objects in scene make sure you select all and apply scale/rotation/location. What this does is make the origin points of mesh proper such that it sits at relative 0, 0, 0 position when dropped. By applying rotation a model shows as 0 degrees rotation when placed. This also works for OS/SL where if you rotate an object in blender and import it shows as some rotation in its edit properties vs 0.
It seems a bit more critical here as HiFi is assuming less about what you mean to do than SL does - in other words it doesn’t try to fix common mistakes in mesh modeling I prefer the HiFi way myself - I want it to look as close to how I model in blender as possible.
Now the scale 0.01 in the FBX exporter… that is something to watch - should HiFi change their interpretation of scale (or the blender FBX exporter do so) you could end up with some really tiny models imported. For now it’s the correct value to have a metric scaled model appear proper in HiFi.