Hello,
I'm trying to perform a pretty simple operation - changing the symbol labels for a raster. The original was labeled backwards from what I wanted, but the symbols were correct:

When I tried to edit some of the labels manually it would apply the change to a different symbol or not at all.
Here is me trying to edit a label:

And the outcome when I apply the edit:

I feel like I must be missing something super basic. The raster is a layer from a map package I imported into pro. Is that the issue? Should I export the raster into a gdb and just rebuild the symbology?