Hello,
I have created a custom Label Expression for our wastewater main lines, lateral lines, and manhole assets. The custom labeling is requested from our Sewer Collections crew. This is the labeling standard that we want and are achieving in Pro and in a Map Image service:

But this is what we are getting when putting the Feature Service, with the same labeling expression, into a web map and viewed via Experience Builder:

- We lose the 'Center-straight' placement for the sewer main label.
- The length label for the sewer laterals are center and not 'place at end of feature'.
- For the manholes, we lose our white-circle callout for the number label.
I am not sure why the Map Image service retains the custom label expression, while the Feature Service equivalent does not.
We're on ArcGIS Pro 3.7 and Enterprise 12.0.
Look forward to your response. Thank you for your time sir.