Layer files

[SLouq]

I have a feature, which I symbolized and created a layer file for, which displays correctly in ArcMap but when trying to view the feature in ArcGIS Pro with the same layer file one of the catogories which I symbolized by is hidden in the map. The category name is there because I see it in the table and when I select it in the table it highlights it in the map. I don't understand why it would show properly in ArcMap but doesn't show properly in ArcGIS Pro

Why is this?

[SLouq]

I removed the feature from my map and then brought it back into my map as a single value feature, tried applying the unique values symbology to it so I could assign symbols instead of using the layer file. Tried changing the sorting of the categories and then tried applying the layer file to it again and it displayed correctly.

Don't know what I did