Preview Window Model Rotation

Hi guys, I made a bunch of prefabs from a model, now I discovered that the default rotation of the models when previewing them in the inspector is facing away (back of model has no faces) so I have to click and rotate the preview window before I can see what it is. Have tried saving the model in a different rotation which works previewing the model, but the prefabs have no change in rotation, even recreating the prefab after model rotation. Is there anything else I can try besides putting the model as a child of and empty GO. Hope this makes sense.
Thanks.

Apologies, I may have posted prematurely. I think when rotating the model it actually rotated the origin so It didn’t make a difference. I’ll post back shortly.