Adding Input Field to Field Map issue

Question

Something wrong when I select manually match field for an output field.

I select a source for a field, e.g. DIA. Then I click OK to save as usual...nothing special.

Then I open Append block again to add another field, but previous insert was gone...

I made also a video to prove it: ArcGIS Pro Append bug - YouTube

ArcGIS Pro 2.4.1

Anyone has this issue?

Cheers

Stefano

SMauri · Accepted Answer

It's a known bug.

This is what Esri Support tell me about this problem:

#BUG-000111603 In ModelBuilder, the Append tool setting for the 'Use the Field Map to reconcile schema differences' option does not preserve the field mapping selected

Cheers

Stefano