Hi All,
I am experiencing an issue with the "Load Data Using Workspace" tool in ArcGIS Pro 3.4.
When using an expression to assign a value to a field in the Mapping worksheet, the tool fails to append the shape data.
For example, using the expression below for the CASE_NO field:
TargetField | FieldType | Expression |
CASE_NO | String | !DocName!.split(".")[0] |
causes the tool to append the attribute values but not the shape. See the below screenshot:

However, if I use only
!DocName! (without
.split(".")[0]),

the shape data is appended correctly. See the below screenshot:

This issue was not present in previous versions (such as ArcGIS Pro 3.3 and earlier), where the same expression worked correctly.
I have attached screenshots for reference, showing the difference in behavior.
Could anyone please confirm if this is a known issue in ArcGIS Pro 3.4? If not, I would appreciate any guidance on resolving it.
Regards,
Sumit