Wiring Editor: strange behaviour modifying connections

[aarranz]

Example, consider we starts at this point:

The problem raises when the user modify the connection between the NGSI Source operator and the Map Viewer widget to be exactly the same than the one currently used in other behaviours between the NGSI Source operator and the Spy Wiring widget:

If the user finishes the drag and drop operation in that step, the wiring editor adds the connection NGSI Source-Spy Wiring connection and maintains the previous connection:

Although this operation is by itself is strange (I think only expert users will try to do it), the behaviour exposed by the Wiring Editor is not any of the expected ones. In my opinion, there are two options:

• Adding the NGSI Source-Spy Wiring connection to the current behaviour and removing the previous connection. I prefer this option because I think that make sense and can be view as a shortcut.
• Or ignoring the user and doing nothing.