Planarize deletes all attributes

[JWeiss_AP]

I am trying to use the Planarize tool (in ArcGIS Pro version 3.4.0) to split river network features in a Feature Service Feature Class. The tool runs fine and quickly, however, the tool removes all the attributes to null except for the numeric 'Length' and SHAPE_length attributes in the resulting features. Is this normal for using the tool on Feature Services or is this a bug?

[DavidPike]

Seems like a bug.

[JWeiss_AP]

I thought so too. I'll try log a case and see if it can be upgraded to a bug.

To add to this, I've also noticed that splitting line features in one of our Feature Layers seems to clear the one attribute that is linked to a domain.

[DavidPike]

Ah I do recall something with split policies on a domain.

https://community.esri.com/t5/arcgis-pro-questions/splitting-line-wipes-out-domain-attributes/td-p/2...

I did find this for AGOL domain policies (I never knew they existed).  So may be worth a read and try out in the Python API.  

https://learn.finaldraftmapping.com/update-split-merge-policy-for-a-domain-in-an-arcgis-online-hoste...

[AlfredBaldenweck]

Yeah this one bit me today as well. Change the split policy to "Duplicate" or else each record gets set to the default value of the field, which is typically Null.

[JWeiss_AP]

Using this code:  Splitting tool wipes values from AGOL feature serv... - Esri Community from @willbruce_KarukTribeDNR did the trick!