I'm having texture issues when bringing my modeled clothes into CC3.  In Blender, I baked my PBR textures to PNG format, and exported the clothing model in FBX format. In CC3 (latest version) I create an accessory from the FBX file and convert it to clothes like I always do.  But when I add the textures to the PBR (or any other) shader, there are problems.  The normal maps have no effect--I crank the slider up, but no effect is visible on the clothes.  I tried a TIFF version of the same normal texture, but it did nothing as well.  Also, the base color texture doesn't respond to the adjust color panel (e.g. sliding "hue" back and forth does nothing). The imported PNG version looks fine in the original colors, but can't be changed. When I import a TIFF version of the same texture, the color changes as expected.

Why might my textures not produce normal effects or allow for color changes?  Are there common reasons for this?  It works fine in Blender.  The model is properly UV unwraped.

Any help would be greatly appreciated.