Hello, we have many layers with data in them which may hold "NULL" values. We have had no trouble symbolizing these values in ArcMap, however now that we are moving to Pro and AGO, these records are not displaying.
Please come up with a solution so that Pro and AGO will see these values. We have dozens of data layers that could potentially be impacted and it would be very time consuming to have to edit all of these.
Additionally, there are some data providers for whom a "NULL" value cannot be correctly replaced with a zero.
It is a know issue Problem: Data represented by null values are not symbolized on the map in ArcGIS Online