New edge not connected in Trace Network

[clc]

I am working on creating a Trace Network from scratch for a small water network and I have a problem with the results of running a Trace of type Connected. My understanding was that everything should be highlighted when putting a starting point anywhere on an edge. I have practiced with the very good tutorial: https://learn.arcgis.com/en/projects/trace-a-stream-network/#create-a-trace-network
and that was the case. So I decided to add one more "stream" to their example, I run "Validate Network Topology" and it worked perfectly removing the dirty area and adding 2 more junctions. But when I run a Trace of type Connected, this new edge is still not connected. If I put the starting point on the new edge, it highlight only this edge, if I put it everywhere else, just as before it highlights everything but this edge, see below

What do I miss when creating this new stream? Thanks for helping me understand this.

[clc · Accepted solution]

OK, I figured it out. The tutorial (and my first attempt) was based on a "Simple edge" Trace Network which means that a line feature had connectivity only at its endpoints. So when I added a new line snapping on a line vertex or on its edge, it was not connected. I just needed to create my Trace Network with the Connectivity Policy set to "Complex edge". Should always read the documentation 🙂