Help! Graduated Symbols glitch in arcpro?

[ChristopherSanchez]

Hey all!

I'm finally putting on the finishing touches on my map and have come across a weird situation where I try and use graduated symbols on my field (data type is long), but once I put all the information in the tool it shows me that there aren't any values. I created a new field and changed the data type to double and it didn't work. also restarted everything including my computer with no hope. There are a lot of null values right now as I am waiting for my contact to update the field. Also, I used the union tool right before trying to use the graduated symbols. I doubt that would have an impact. I also tried to change the classes but as I thought it reverted back to 1. attached below is a photo

[DavidPike]

Is this based on a join? You'll likely have to save a new feature to make it permanent.