Issue with Null value

Hey everyone,

I have a feature class with multiple fields. Some of those fields have domains. When I start editing and create a new point, the fields that don't have a domain are empty and don't show null, the fields that have a domain however show null.

When I do a field calculate on the null field and use the null disappears, but once I hit save edits the null shows up again. When I do them one by one and choose the empty option of my domain and then save edits, null does not show up.

Is there a way to do the same thing with the field calculator and when I hit save it stays empty?

I'm asking, because when I try to calculate a field in the same feature class, using multiple fields i.e. in python, the features that have a null value in any of those 3 fields won't be calculated.

Thanks,

Tim